This isn't easy to classify.
- First of all it's hard (if not impossible) to measure objectively.
- Then, once someone found something annoying, after each such time it may take less, to trigger annoyance again. ("found annoying"... it may even be something that was annoying, in such understanding that more than half the readers would think it to be annoying)
With that, to a certain point, this is in the nature of a public forum.
If I take a guess, I can think of certain posts to which you may be referring. There are indeed answers that can be read as "Everyone else is wrong (and lacking IQ), only I am right". Some/Many of them can also be interpreted as "The particular member did misread the question".
And sometimes it is both. I have myself been abso-bloody-lutely sure of gotten a question right, when later I had to realize that I overlooked an actually obvious other interpretation of said question.
Also with regards to that kind of answers, depending on which answers each reader classifies as belonging into that group, it is easy to get the impression that those come to an overwhelming part from a group of not to many authors.
Though it is to be considered that many factors play into that. The way someone interprets (correctly or not) a question, and the way they give their answer may depend a lot on their personal experiences, and their level of English.
Personally I would say that we did not have a recent increase in all of that.
However, I do myself have "suffered" the same perception in that - by reading certain posts of certain members - I have personally thought things like someone is too single minded, or might need to relax a bit.
Overall however, I do not think that this impacts the forum in such ways to require more moderation, which then in turn would also limit the freedom of others. Not to say that such moderation might easily become very subjective by the moderator, and that would certainly be all but an improvement.
Further more, there is and always will be the fact that to any question asked here, people will give answers that are wrong (not meant to be, but by various reasons end up wrong). Answers are free (of charge), but come from just about anyone, and without requiring any qualification of the responder.
And it that light, the line between an answer that simply happens to be wrong (despite best intends) and an answer that has further attributes (the perception of which may be annoying), well that line becomes thinner and thinner.
In the end there are a couple of means available.
- Talk about it here on the forum. As by this thread we do.
- Report to moderation, if you feel a particular post to be way out of line (usually that is when bad language is involved, or when it is an insult toward you). Moderators may act on it or not. Independent of whether action was taken, you also may or may not get feedback.
- Ignore such people (the forum has an ignore list in your user profile / not sure to which extend it works / I had not yet have to test it myself)
However, while it is welcome to have a general chat on this topic, a note to all participant of this thread: Please avoid public shaming of specific cases (Just making sure this thread wont derail).