At their old prices I thinks 1Ups are a nice fun purchase for people who like arcades but don't want to fuss with an older machine in terms of size, cost and maintenance. They aren't for traditionalists, but they have the option already of buying real cabinets. Although at the new 1Up prices they are quickly approaching the price of the real cabinets.
I have a Rampage 1up with a Pi4 in it and the Star Wars pinball and they get tons a play during our parties. Mostly the younger kids but even the adults get a kick out of them. My 14 year old daughter who normally doesn't play games puts in games of Joust regularly. I'm happy with my purchases and mods.
A true "to each their own" item.