@marcan YouTube product management is dangerously detached from the reality. This whole "guessing the resolution" thing is absolute nonsense. "Yes, downgrade my video to unwatchable because I've just had a 2 seconds interruption of the internet" - said absolutely nobody ever.
If you find any contact, explain to them that 99.9% of their users will never want anything below 720p (and even that only on very slow connections).
@creepy_owlet @marcan it really depends! Watching video essays is fine on 144p as it's basically a podcast, and I specifically set YouTube to use a low resolution when I'm on mobile to reduce data consumption.
On the other hand, when watching a presentation it's kinda important to be able to read the slides, which usually needs 720p at least.