The dogma in this hobby is hilarious sometimes. People build big, wide, generic cabinets with custom/original artwork (blue lightning and random mismatched clip art FTW), multiple controller types, LCD displays, coin-in buttons, and marquees emblazoned with the word “MAME”, and then turn around and blame the cup holders for ruining the authenticity.
I put black cup holders on my black cabinet, and if it weren’t for the amazing convenience of their presence I wouldn’t even know they were there.
It’s like driving a cobbled together kit car that evokes the hot-rod culture of yore, and saying you can’t have a CD player in the stereo because the cars you’re vaguely imitating didn’t have them.