Even a post on this forum can be made editable by everyone, but that’d probably be not a very good idea — some curated list is needed, as I also stated here earlier, because of all these duplicates and common misunderstandings or false positives.
By the way, making a post editable by some people is an option, apparently — so technically we could have a few volunteers keeping it up.
That said, a bugzilla does have some technical advantages — true, but it’s unclear for me whether it’d be worth the trouble for this particular purpose.