Give up being smug and presumptuous.
I make short experimental films and music videos mostly using a DSLR or my phone and don’t go anywhere near 4k, nor do I wish to. If I did I would expect to upgrade my hardware, naturally. The point is the same setup used to handle the same 1080p material beautifully, previewing effects at full res, jumping around the timeline quickly and responsively. It’s about the applications themselves becoming bloated. Shortcuts that hang a second or don’t register, a stutter before playing, resizing windows moving well behind the cursor. I can no longer show audio waves on the timeline because drawing them is now too strenuous, even though this worked sweet in PremierePro over a decade ago.