I recently made some extensive corrections to an answer (catpnosis's here), purely to improve the English and to make it easier to read and understand. The author was clearly not a native speaker, but the answer appeared important enough to be worth the effort. So I was doing it as a small "service" to the author and the group as a whole.
However, after doing it I realized I might be offending the author. I'd seen yuttadhammo doing similar edits, but his were always very minor. My changes, on the other hand, were extensive.
Given that the site language is English but, given the subject, we are likely to have lots of non-native-English speakers, the scope for such "gardening" is going to be extensive. Any thoughts on whether it is to be encouraged or not? If this were a public Wiki, like Wikipedia, clearly gardening is an important part of the culture. What about SE?
P.S. The OP did revert some of my changes (re-violating idiom again but maybe because I'd fudged the meaning) but left most of them. However, I don't want to assume that means it's OK to do this in general.