Laziness.
Yes, conceptually it’s something about surrendering one’s voice and agency to a subpar machine. Or something like that. (Though that persistence-suggestive neutering metaphor is probably a unwarranted exaggeration.) In practice though it’s more like “I don’t want to write anything, but some poorly written document I’ll just proofread to be not too blatantly wrong beats having absolutely nothing. PRs welcome.”
It might be not the best decision, sure. Quite arguably, a wrong one. Still, I find it concerning that it’s sufficient for the author to dehumanize someone, even in a jest of edginess. Like wtf dude chill down, as if the world isn’t mad enough already.