So why carry on reading a thread that one finds "problematic"? I expect people will find that question too blunt, but it is, quite simply, what I think.
It's also what I do, so I'm not suggesting anything that I don't do myself. Everyone has problems with something. Gransnet is big enough and broad enough, surely, to fit everyone. Just find your level and go with it: if you don't like arguing, don't argue; if you don't like what you read when other people are having a robust discussion, stop reading that bit. Seems simple enough to me.
There are quite a lot of political threads, for instance, where I feel out of my depth, so although I might dip into them, and even sometimes compose posts, if I'm not comfortable with what I've posted or if I feel what I've said will be misinterpreted (my fault for lack of clarity as likely as not), I delete my 'composition' and wander off elsewhere. Likewise of I feel I can't cope adequately with what seems to me like a sharp retort from a poster. I just quit.
Seems to me these options are the same for everyone and it is worth considering that those posters who may always appear strong or opinionated or well-informed or forthright, are only showing that side deliberately precisely because this is a public forum.