I can appreciate that you prefer the classic implementation of them better than what’s going on now, but the point still stands.
I think it's a fundamentally different thing. Hidden Mickeys are IP, but the space they're in isn't themed around hidden Mickeys.
If the goal is to use an IP as a draw for a space, then being subtle with it defeats the point. If you're going to be subtle, then the IP is just a little hidden treat and not main point of the theme.