I dislike Jeff's expecting only 'significant' edits (for his definition of significant), ie., he encourages us by saying 'if it's a trivial [in his view] fix, have a look and fix more stuff, etc.'
for various reasons.
I usually only want to fix the substantive errors- I've worked in translation for instance and when correcting there, I always did my best to avoid changing the sense/meaning and personal style, while correcting real mistakes. I don't like over-editing someone else's question, I think it's rude.
However, 'trivial' is very subjective, as has been pointed out, errors in the code blocks can be trivial, but irritating. For instance, I wanted to edit a code block, where the closing-brace was mis-formatted and not inside that actual code-block, so any copy-pastes would be syntactically-wrong.
Sure, it's not much to fix once copied (assuming you can figure that yourself, after all this site is about helping people who don't know things...), but if it's copied dozens of times, the added-up waste of time is significant.
Anyway, overall, I just don't like the attitude that a site full of minor errors, spelling-mistakes, accidental type misnamings, so that the whole answer makes no sense, etc, etc. is acceptable. To me is just makes the overall quality crap.
Obviously Jeff disagrees, but it seems to me a bit of what his personal view is, rather than (in my view ;) ) what benefits the site. Everyone's different, personally I enjoy going around fixing minor errors, spelling-mistakes etc. Eventually, hopefully I'll get the rep and can just go around doing it to my heart's-content.
I would have thought, as people have said, there is a way to fix the problem, not just say 'I don't think it's a problem, therefore it isn't'. There are plenty of options, maybe allow edits and everyone else can vote on whether to apply them (then they won't need to 'waste' the mods time.) And maybe that's not trivial (sic.) to develop, but various ideas have been put forward and it seems it's more that Jeff doesn't want 'pointless edits'.
I don't mean anything against Jeff, it's a fabulous site on the whole, it's just something that happens to bug me alot as it suggests an undertone of 'look, do something useful, or just f**-off, ok?', which isn't in the spirit of collaboration, to me. I gave up editing Wikipedia a long time ago...