Yeah, we get enough of those from the submissions.
The submitter can click "Edit" to restore their original title after the autoshortener has changed it; but there is no way to tell HN "Please use exactly this title in the first place."
(I remember this submission of mine being affected by the autoshortener, for example: https://news.ycombinator.com/item?id=40114482 "How thumb indexes are cut" autoshortened to "Thumb indexes are cut".)
This is simply a UI issue. It would be totally fine if, when you went to submit a link to HN, the UI before posting said "I'm going to use this title; is that OK? [default is yes]". The only problem is that HN's UI doesn't do that confirmation step; instead it forces everyone to double-check their own post after posting. And then when someone innocently fails to do that double-check, we get these meta subthreads and the only recourse is to ask a mod to retitle the post. It's a silly aspect in a system that otherwise tends to "trust the user."