As I read that series of posts, the person is not doubting your credentials, but suggesting that you have sold out. Since I don't think the poster is making that allegation just to stir up trouble, I don't think the poster is a troll. However, there is probably a sound argument that the poster is an a hole.

https://www.dcurbanmom.com/jforum/posts/list/45/768861.page

If you want, I can send you my resume to prove I am not a fraud.