It's better to take some steps before it's out of control. One of posts on r/stellar regarding price discussions. There are several more.
As I see, r/NEO recently banned such posts from the main board and moved them into daily sticky discussion and it looks much better now. See rules point 2 right hand side.
It's not about being elitist. r/gridcoin is one of few crypto subreddits where someone critical about some aspects of gridcoin (if he states good reasons) is upvoted. I wish it will stay open and friendly.