It's not an unreasonable to think that a backup os is a good thing to have, even if in this case it's the one (most likely) being the reason Bazzite broke.
Now, I did listen to the video on my way to work, so I might have missed some details, but after checking the comments it seems like Jay's performance wasn't really where it should have been. Got to wonder if there's some funky gotcha with the gpu module or proton settings.
Also, does Bazzite default to xorg or wayland? I honestly have no idea.