It will probably give you hives to learn I just replaced two of my Blu-Ray players with 4K UHD Blu-Ray players.
Look, you still find value in TiVo, so nothing about your media viewing consumption surprises me. It's probably TiVo's limitation in 4K that caused you to buy a UHD player in the first place.
Converting all of your VHS -> DVD -> Blu-Ray -> UHD movies is exactly what the industry wants and needs to hold off innovation. Did the UHD player come with a red hat that said #maga on it?