You speak with such authority, and yet, I know you are not a millennial. A millennial would know that arcades were white-hot in the 90’s. Have you ever heard of Teenage Mutant Ninja Turtles? Turtles in Time? The Simpsons? X-Men? All those Neo Geo games? There was also this game called…um, street something…streets of fighting? Street Kombat? Mortal Fighter? Street Fighter? I think they made a second one of those, too. Shoot, where did that come out originally? It’s escaping me right now. It’ll come to me eventually.
Edit: I’m re-reading your post; and you contradict yourself. You say people born in the early 80’s are millennials, but if you were a kid in the 80’s that makes you gen x? Do you not know how math works? Someone born in the early 80’s would be a kid during the 80’s.
Anyway, the more I think about it, the more “arcade games weren’t popular in the 90’s” seems like one of the top 5 dumbest takes I have ever read on the internet.