EDIT: To actually answer the question - I, personally, think a little bit of good-natured ribbing is ok. I really hate the "OMG, that's not even a proper MCU", or "You call that a circuit diagram - use this £10,000 software you fool" gatekeeping - people are into this stuff for all sorts of different reasons and at all sorts of different levels.
I'm quite new here and have noticed this a little bit myself. I've downvoted a couple of answers that weren't really answers and were a bit on the rude side.
It's difficult I think. I'm not an EE, I'm just trying to learn how to build fun gadgets and cool robots. I can completely understand that when you see the same poorly written questions or in some cases demands, over and over, it can be fatiguing generating the patience to write the whole "Welcome to Electronics Stack Exchange, please could you use actual words in your question" stuff. I try to where I can to pay back some of the help I have had.
I don't think rudeness is acceptable, however, it does have some small positive effects: I had a question recently about a problem with an LCD screen having lots of interference. I initially started writing a question here about it, but as I wrote it, I realised I hadn't really thought about it enough because I couldn't quite explain the problem properly. I knew that if I posted it as it was I'd get some downvotes, maybe a bit of 'banter' and my reputation would be diminished ever so slightly for that future Really Important Question I might have.
I did a little bit more research and realised that I probably needed a voltage regulator. Having never built a circuit like that, I started thinking about writing a question here for guidance, but instead I read the datasheet for a few, tried one of the suggested circuits there and solved the problem all on my own and felt much better about having done so.
If everyone here was ALWAYS perfectly polite and helpful to EVERYONE, I probably would have posted my question, solved my problem but come away without the little boost of confidence & knowledge I got from working it out myself.
Of course, 2 days later I posted a stupid question that was answered in plain english by the datasheet I linked to in the question, so it doesn't always work. :) (and actually the answer I got was perfectly polite!)
I think where it really falls down is with the younger askers - I'm a teacher by trade and I can spot a question written by a kid a mile off and they often aren't the best quality. I hate seeing people pile in on these because I worry that that kid is going to be put off from their new interest and that's one fewer EE for the future. Not everyone learns the same lessons from the same experience I guess.