As I understand it these forums are not designed as or intended to be a formal counselling space.
Not everyone wants a professional to talk to. There is a lot of benefit to speaking with someone who has lived through experiences similar to your own.
The forums are moderated by professionals and anyone can report a post if it worries or upsets them.
I used to worry about unintentionally causing harm so I can understand your concern. If you think it isn't made clear enough that this is a peer support forum can you think of what changes are needed to make it very clear to members?
As to finding the time to post over the years that is an easy one to answer. I post to others when I am able for one simple reason... People here posted to me and it helped me survive. If I can help someone else in return that makes my life worthwhile.
I hope you find the support you are looking for.