This is simply not true, at least for many posters. Just look at the trolls-r-us threads. Countless postings very similar to this piece of work…
in which ParallelLines casts deep suspicion on a new poster for having the temerity for being in their 20’s and posting on this message board. Absolutely NOTHING to do with the content of their actual posts. In fairness, at least a few posters called them out for this ridiculousness. You call that being open to a newcomer? That thread is littered with similar posts on new posters.