Its not about "Getting with the Times"
Its about the intended output look.
No LCD, can simulate a Vector CRT monitor look well. Laser beams are closest thing to a vector monitor brightness.
LCDs are notorious for distorting and blurring non native resolutions. (most classics, are low resolution)
LCDs lifespan is about 5 years max... if your lucky. A good CRT can last well over 20 years without repairs.
A cabinet that is light weight (LCD), is a cabinet that can be rocked around too easily during heavy action gaming.
LCDs often have problems matching color performance, and Contrast levels, of CRTs.
LCDs still often have motion blur and viewing angle issues.
LCDs have their place for newer games. But for classics... it does not improve things... it degrades them.
Older Console gaming systems look better on CRTs as well.
*And... you really dont save much space when you use an LCD anyways. You still should be using the proper slanted viewing angle,
and your going to have people standing behind it. What do you really save? 1ft max?
If your from an era more centeralized on the 90s - 00s, then you might not value the real CRT experience as much.
Also, younger generation people tend to stick their noses up at older things... mostly out of pride of what they consider "Their Era".
New does not always mean better. It often takes a lot of effort, to get these people to see past this.
One elder EGM magazine article said that it was possible to hook a Sega Genesis up to an RGB monitor. Turned out that the Amiga 500 Monitor I had, was RGB. I called up a cable making company, and had them custom build an RGB cable. I was shocked at how clean and clear the picture was. However, many games didnt look good as a result. The games were designed to be seen with the typical composite distortion. They used the signal and CRT distortion, to devise the artwork look, and flicker effects. I ended up using the standard composite signal as a result of many games looking painfully awful, on RGB.
Some of the Filters on Mame help the look... but they still are often far from what the games are really supposed to look like.
Further making things worse... is that timing of the games are often locked to the monitor refresh. LCDs dont do odd refresh rates... and
so the games dont even play the same. Visual and Audio skips... and other problems are going to take place.
So, it boils down to what games you are playing, and whether you can deal with them looking vastly different than they should.
Not about the Age of the equipment being used.
Ive got a pair of speakers made in the 70s, that will blow 95% of the modern speakers made today, completely out of the water. Ive recently compared these against the top model speakers in a high end Stereo Shop... and their flagship $3000 speakers could not even hold a candle to my "Ancient" speakers.
Its not the age, its the functional results, that matter.