The "fuddy duddy" is strong with a few in this group
I'm not sure if anyone has noticed, but illumination is part of virtually
everything people customize to make their own nowadays. PC cases, very expensive home theater screens, speaker systems, vehicles, younameit...it probably has accent lights and they are probably dynamically controlled.
We all have opinions about what we think "should" be on a cabinet, but that's all they are, and they don't carry any weight whatsoever with regard to what an individual builder chooses to do on their own machines. The folks who don't like them are likely in the group of folks who want to re-create the classic look, but others might be using the same cabinet also as a jukebox, or want active buttons to light up to make it easier for guests. Or maybe just want something with a bit more visual "punch" to wow the folks who are so young as to have likely never even seen what some would consider an "ideal" embodiment. And if they did, it would likely not be as well-appreciated, as it would by some of us old-timers.
Not everyone is the same, nor are their intentions, and sometimes the advice, though usually well-intentioned, is provided by those who assume that they are. If it's not well-intentioned, however, then it's just someone who is trying to control someone else's decisions to suit their own aesthetic ideals.
You do
you.