While I agree that's a super frustrating experience, I think you're projecting an experience you had on one (larger, probably more rigid) site to every site that shares its software. Not every small wiki team is like that.
When I get a correction on one of my pages, I welcome it. Even when it's a grammatically incorrect mess, I do my best to incorporate the information added while smoothing out the wording. Even when the correction is outright wrong (there's one drive-by I used to get every couple months who liked to change singular "die" to "dice" when it wasn't appropriate) I explain my reversions in notes and offer to discuss if there are any questions, hoping to leave the door open for a future editor, because that's someone who cared enough to hit the edit button, and I appreciate that.
So while I get that you're turned off from the hobby - and that's a shame - not all of us need a "fucking dissertation" to have decent collaboration.