Honestly, the process didn't sound _that_ onerous to me...
Though obviously it can feel outsized when trying to fix a typo.
Nothing in there is urgent in any way, or blocking, or prevents you from doing other things.
For example:
> But this contributor UX is holding Python back
As in, fixing one character typos?
If he didn't really want to follow the process to contribute, a bug report would have been fine (which is what finally happened, reading the PR).
He ended the PR with "I unfortunately feel that I've already exhausted the amount of energy I can dedicate to this", but he had some energy left to write that twitter thread.