well, i can understand your feeling, what you mentioned seems more like using technology interests as an "excuse: to have some form of human interaction (not saying is bad, i'm also in trend) rather than the need to do technical discussion.
Don't want to be Mr.Freud of the situation but if that is your need try to look over tech a find people to share time, if you want to have technical discussion in a genuine way don't think any platform will fit your needs, as someone already pointed out internet is full of instragram-like-ego-chamber so probably the best way is to cultivate your interests, try to ingage people with interests like yours and create a small discussion board outside of mainstream platforms...
