In time, we can observe continuity in members' posts, which may be an indicator the person is being genuine.
Due to my PTSD, I can sometimes catch myself feeling unsure of new posters, which I quickly realize is not "fair" to new posters, as we all have to start posting as a newbie.
The whole "anonymous" type of community can feel a bit limiting, while also granting us freedom for more fully sharing while maintaining anonymity.
There may be a troll here and there, since this is the open internet.
I accept this and continue to find value in the forum.
I hope you feel more comfortable soon.

WC