Do you remember 2012?
So, go ahead. Try to find that old YouTube IPA for your iPad. Hit the forums. Ask for a link. You’ll likely come up empty—but the search itself is a lovely little trip down memory lane. old version of youtube for ipad
Have you found a working method to get the old UI back? Let me know in the comments—just don’t send me any sketchy download links. Do you remember 2012
Almost certainly no.