I rejected an edit because though I agreed that the question or title could be more clear, and might even work better in a search engine if it were improved, the editor was trying to change British/Canadian spelling to US spelling as well as other edits for grammar and phrasing. It did not improve anything and is, imo, rude. This is a world-wide site that uses English.
I understand that a misspelling in a title/question often makes searching impossible and that editing there is important and necessary.
I think that correcting spelling and grammar in the body of the question for a person whose first language is not English is not usually necessary. If we do not understand, we could ask the OP to explain it, or correct it and help them do that. Sometimes the language choices explain to (us) the reader that the OP is young or is from a different culture. This is the crux of the matter for me. Also, this is not an English usage or learning stack.
I am not talking about bad/poor questions or answers. That is a completely different subject.
I have noticed that many people here are careful not to judge others on sexual preference or culture -- and I really like that about this site. This speaks to having that same sensitivity in edits.
Here is an example of when editing did not work. The views on the question show there is interest in the original question, even though it was awkwardly worded.link