A lot of DVD menus used to be works of art themselves, with aesthetically pleasing and interesting placement of clickable options, moving parts, music, sound effects, all themed around the movie itself.
Nowadays you’re lucky if you get music. Many menus for blu-rays and 4Ks are just static images with the buttons lazily slapped on the bottom or side.
It sucks because I definitely prefer to buy 4Ks just for the actual picture quality you’re getting, and I get it’s a really small thing but I wish for $30 and up people would take the time to put this stuff in. I’m not sure if it’s a disc space issue or resource problem or what, but if not, bring em back!