Hey @venutius, good to know. I appreciate you keeping this thread alive.
You know, I’ve been thinking seriously about simply redirecting (or rewriting) anything that ends in /rss or /feed to the “not found” page, so as to solve the problem once and for all (and not just for BP and BBP). I *thought* this would be easy either using .htaccess or installing my own rewrite rules in WP. But I haven’t been able to make either approach work yet! (Ignorance on my part, I’m sure.)
But I guess that’s way beyond the scope of this forum.