May I offer you a piece of advice, which is to try not to let it bother you too much if the top thread is something other than what you'd prefer? I know how frustrating that is, I experience that all the time on this site. But it's outside of our control what people want to talk about. You can't push the river, but you can exhaust yourself trying.

Paradoxically, I personally believe that only by accepting this and giving up on trying to steer the conversation or convince anyone of anything can you engage in a way that might accomplish those things. Or at least, for myself personally, I find that when I get too invested my rhetoric gets too heated and I feel all sorts of perverse "someone is wrong on the internet" pressure, and I write dumb stuff that makes people angry but convinces no one of anything.