There are some very professional people here . If I googled most anything related to my car , I was pointed here . There are also people here, like me that I woulkd not consider professional , but the forum is not advertised as and not intended for professional people only.
There is a whole world of car people out there and many are not interested in being seen as professional. They will/would also have something to add that is just as important .
I enjoy being around either type and like to learn as well as teach a little about what can be done to a car taking into account what someone's wants and situation is. A publicly viewable forum has many advantages over other types of venues like facebook, youtube etc.