Ctrl+f is a bad offender. No I don't want to use your contextual search. I want to search for this word on this page!
If you’re hinting at an argument about whether lazy loading content should exist, that’s a separate discussion. In my experience, pages that override ctrl+f do it for a good reason
Every single other page that does it just wastes my time. It's always a super janky slow implementation that somehow additionally fails to actually search through all the text on the page.
[1] https://fmhy.net