I think it's psychological. I haven't had trouble with OTA updates at all - for years now
And these forums are packed with problem-finders, and that's understandable to a degree. I myself really have had no major issues with the iOS 26 beta cycle, nearly every app works fine, and it's not a big deal to get around GUI glitches (for me)
Oh well, I do play things safe: every year just before beta 1 of the new OS, I restore all my Mac/iPhone/iPad fresh and do NOT restore from backup in any way. I then reinstall the apps I've been using, make the adjustments again (especially on the Mac side), and everything else just restores from the cloud. Following this 'spring cleaning' method, I don't have any real problems (shrug) and enjoy the new start =)
PS - over the year, I accumulate so many apps and do so many tweaks - the fresh start feels nice, psychologically at the least! haha