I have found that by reading very widely, across lots of topics and threads, it becomes clear which frequent posters are faithful to the magisterium, and what their specific expertises are. There is one poster who knows Church documents like the back of her hand, and when I needed a specific, documented answer, I pm’ed her and she gave me exactly what I needed

Some here teach RCIA and know all about that. Some know about mental illness, or the annulment process or canon law.
If I ask a question and the thread derails after I’ve gotten a good answer, I cheerfully abandon the thread.
Some people do get rude or nasty, which seems to happen in any anonymous environment, and I just choose not to notice. There is context behind every post, but most of the time we have no idea what it is, or what would unexpectedly push someone’s buttons. It was useful to me to know that perforated condoms should be known about, bc I have never heard of them outside the Catholic world. It didn’t sound a bit doctor-bashing to me, but that’s because of my personal context.
Everybody’s situation is different. Take what works for you and don’t worry about the rest
