Pheace: What was the lie exactly?
Crevurre: You made it sound like it's always been this way. It hasn't. Only a couple of years ago, you could say anything almost (except some developers banned everyone instantly many did not).
You seem to be talking about 2 different things here? Subforums are handled by subforum moderators of which yes, many did not bother with and still do barely manage anything. Those aren't steam moderators, developers handle the moderation of their own subforums.
So your issue is that Steam has started moderating/enforcing rules (which they already had) more and more? That you used to get away with breaking them and now not anymore?