In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Don't twitch to correct your trajectory it's ok hitting obstacles.
You don't have to go through the rings so don't force yourself to do it.
Learn the patterns the obstacles arrive in and be ready for what's coming next.