> We don't have to dehumanise interaction to present clean information
I agree with this sentence, but when actually implemented it often results in fake upbeat corporate marketing cheerfulness niceties that goes in the opposite direction.
To your other points: I think SO should be used when you can reasonably expect at least one other person to ask your question down the line. It's not about your particular issue, the idea is you are entering something into a knowledge bank for easy retrieval by others later on. This is why it's also encouraged to answer your own questions! It's not a discussion site, but a mapping of questions a person may have to the answer.
Indeed, if you want to discuss back and forth, you are better served by the project Github or a project mailing list or the forums of old. If you want to focus on the personal connection: there are tons of Discord servers, Slack workspaces, subreddits, I guess some forums and IRC channels are also alive etc.
The problem that many people have with the new cultural shift is that the expectations are just different. Not everything has to turn into a social site with followers, likes, shares, news feeds etc. There is simply an influx of people with a different culture/value system compared to the original hacker ethos. The problem is, it was the hacker ethos that made the site so efficient, usable and popular.
Sure, hacker culture is also known for its flame wars and shouting RTFM and being unwelcoming, and it should be improved, but the problem is, that you cannot scale personal one-on-one mentoring when the influx of novices is so fast. There is tons of low effort "this code does not work, give me solution plz thx" and a dump of random code from some app. You can't do handholding guidance with everyone. Many of them are not receptive to anything and expect to be served with an answer because they deserve it and if they are told to put in some work, they say it's too elitist.
The thing is, SO's biggest value comes from the contributor base. And as we can see from the meta posts, the contributors are not appreciative of the new direction.
If it's stretched too far, at some point it will come to a fork with some stronger filtering and a different culture and many of the people who take their time to answer questions will move.
You can't force people to interact in a way you prescribe from the top down. It has to come organically from the community itself.