To seek understanding, and rather than merely reverting the edits, I searched here on Meta for any information about this issue and I was unable to find anything directly relevant. I did find this tangentially relevant answer (written by the same moderator) which suggests that both the words "correct" and "grammatical" should be forbidden from questions due to those words being strong signal that the question is unlikely to be useful to anyone else.
However, one of the title edits didn't remove the word "grammatical" at all, and this seems to be an implicit acknowledgement that the particular content of that question does make it of more general applicability and usefulness to other readers.
Both questions are attempting to ask about a general grammar principle, and the particular words in the example sentences used are largely unimportant.
To discuss garden path sentences productively, it seems inadequate to merely define them, and better to offer examples. I believe the example sentences my question presents for review don't stand alone as mere one-offs but are in fact generally instructive of garden-path principles by "showing instead of telling."
For the question about comparison sentences, the word choice also doesn't seem problematic to me. "I am [comparison]-er than [nominative or accusative pronoun]" just isn't a helpful way to ask that question, and would miss garnering site visitors or internet searchers who don't know those terms into the question to learn something interesting.
(Of course, I knew before asking the garden-path question that the sentences were grammatical; the precise point of asking the way I did was to try to capture an interesting phenomenon from the perspective of a person who was in doubt about them as a class.)
So here's this meta question as an attempt to hear from the community.
Why revert the changes? Because from where I sit right now, having seen no discussion or explanation, I don't really like them. To me, my questions were not improved. It could be argued that in the one title, "grammatically correct" can just change to "grammatical," and I'd be open to that, however the places where the body was changed from "correct" to "acceptable" don't sit right with me. If there is some requirement that askers of questions on English.SE categorically may not say "correct" instead of "acceptable," then from my current solo perspective without hearing any rationale, it is unlikely I would want to continue participating on this site—it is important to me for my own particular character to remain in my questions.
If there is some way that I can edit my own questions to make them more generally applicable, I'm totally open to hearing suggestions and then working to improve them. The edits in question, however, don't seem to do that.
P.S. Admittedly, the first question says "Feel free to edit my grammar. No comment necessary." And yet, I'd like to understand how the edit does in fact improve the grammar or avoids incorrect grammar. (Ba-dum-kshhh!)