One proxy might be to look at the upvote counts for each of their respective latest release HN posts.
Eg, this post has ~50 (though only posted an hour ago)
Rails 8 had ~550
It’s amazing how much rails devs feel the need to denigrate Django, feels like an inferiority complex.
Rails might not get a lot of new articles about it, and the chatter might have died down, but I think a lot of people still use it.