That's all nonsense. literally all wrong.
Your mere assertion is dismissed.
You said that "in 2019 there is no readily accessible path to displaying 15khz rgb on a CRT". This is pure BS. Any one of us could go online right now (in 2019) and order a new or used 15khz rgb crt for delivery to our doorsteps. Groovymame is free (and awesome). This is a readily accessible path.
I know what I said, and when you prove that those Makvisions are currently being manufactured, I'll retract my statement. New old stock doesn't count as being readily available; if it did, then pretty much everything that's ever been manufactured could be said to be readily available.
You said arcade monitors are rare which is also BS. There is almost always a selection on Ebay and Craigslist.
Is that a joke? I said:
"In 2019, in North America, there is no readily accessible path to natively displaying a 15 KHz RGB video signal on a CRT. You either have to find a broadcast or presentation monitor, neither of which are common,
or an arcade monitor, which isn't common either, relatively speaking."
Does the "bolding" help? And arcade monitors definitely aren't common, relatively speaking. They never have been and they are even less so now than in the past. They have always been a niche item. People couldn't buy them at e.g., Walmart or Sears. If you go to any random small town, chances are that no one in that town owns one or has ever owned one unless they are, or were, an arcade operator.
You said 15khz CRT's with component are hard to find.
I said they aren't common, and again, that was a relative statement:
"given that component only became a thing after the DVD format took off in the late 1990s / early 2000s, and even then, it was originally only in high-end TVs,
which aren't as common as low-end TVs."
There's some more "bolding" for you, indicating that it's a relative statement.
There is currently 7 Sony Trinitrons with component on my local Craigslist and 3 of them are being offered for free. It's been like this for years. Plus, If you search for Sony Trinitron on ebay, the list of options with component or rgb is endless, like more than I could be bothered to count.
What of it? If you want to do something that's actually relevant to what I posted, count how many CRT TVs you can find without component inputs vs. ones with component inputs, and do it across the whole country.
On the rest, I'm just going to assume you've never actually seen a tri-sync crt arcade monitor. It sounds like you're regurgitating something you read and misunderstood about presentation and broadcast monitors.
Your mere assumption is dismissed.
The vast majority of tri-sync arcade monitors use the same tubes found in regular SD crt tv's of their day. I don't know of any that have a fine pitch like a pc monitor. If they exist at all, it's rare. The two tri-sync arcade monitors I have here use the same .8mm tubes found on late model SD crt tv's. My old curved tri-sync had a .9mm tube like crt tv's from the 90's. It looks nothing like the 0.3 or 0.4mm pitch found on presentation monitors (like an XM29) and broadcast monitors. look at the pics...
There is no requirement for tri-syncs to have a fine pitch to avoid blurring detail. The 640 x 480 vga res is the same as the 640 x 480 interlaced res used on every SD crt TV.
480i looks like crap when rendering computer graphics on a standard 15 KHz monitor or TV. It works okay for NTSC broadcasts, which don't require the clarity of computer graphics. Computer/arcade monitors are intended to display computer graphics and in order to look good at 640 x 480 they need a finer dot pitch than a standard tube. On the other hand, ~320 x 240 looks fine for computer graphics on a standard tube.
It's the frame rate that differs, not the number of lines.
Wrong. The refresh rate doesn't differ, it's the number of lines that differs. 480i for example is ~60 Hz and it only displays 240 lines in each cycle, alternating between the even and odd lines, to create the illusion of 480 lines (which works due to persistence of vision). 480p is ~60 Hz but displays all 480 lines in each cycle.
Advising people to use crt PC monitors instead of arcade monitors is terrible advice. Old arcade games look horrible on them, even if you output 240p / 120hz. They look almost as bad as an LCD. The point of using a CRT in this day an age is to play old games in their native res and refresh rate for an authentic and pleasing experience. You only get that from a 15khz capable crt and, as we've already established, they are easy to find and plentiful.
Is that another joke? I never advised anyone to use a PC monitor of any kind instead of an arcade monitor. I said:
"The only
worse RGB CRT option [than that Makvision from Happ that you mentioned] is a late 1990s or 2000s CRT PC monitor, which has an even finer dot pitch and can't sync to anything less than ~31 KHz. "
Does the "bolding" help? Since reading obviously isn't your forte, I'll explain it further. Since I said that a CRT PC monitor is even worse than that Makvision arcade monitor you mentioned, I obviously didn't advise anyone to use one instead of an arcade monitor. I would, however, advise someone to, if feasible for them, use an RGB-modded 15 KHz TV with a standard spherical tube instead of that Makvision (or a Trinitron), if they want classic arcade games to look like they originally did in the arcades. In addition to looking right, it will also be way cheaper.