Ali Adler leaving Supergirl

Judging from the major differences between s1 and s2, specifically the back half of s2, and Berlanti being more focused on Flash/Arrow, my guess is that she got forced out.

She signed a deal with CBS Televison Studios to create new shows for them. Supergirl is not a CBS Television production, but a Warner Bros TV production.
Why is she, for the most part, leaving Supergirl?

She used to film those inside episode segment for each new episode, the she stopped and Queller and Rovner took over. On her social media pages, she used to post about Supergirl all time.

But, few months ago she just stopped posting about the show. Why?

Who is the "crazy actor fans" ? do you mean the fans of the actor who plays LL on the show.

Well, pretty much everyone stopped posting on social media a few months ago...that was when the "crazy actor fans" found the show....

Thing is....ANYTHING that comes out here (in our discussion), is pure speculation.....

I think they might be referring to the Katie/Chris stans. Those seem to be the two groups constantly at each other's throats and swarming social media.