I think it is because people ask for it and most THPrs are anxious to help. I also think there's a learning curve underway on the forum (or will be) - you are far more responsive and thorough in your answers than the previous service. I suspect once the community sees more of that and realize it is a more holistic answer the one-off attempts at helping may subside.So it seems people don't know a lot but are very quick to offer advise. Why? I'm curious and always have been. I see post that make me scratch my head and I want to say something but don't. But it's like some just repeat stuff they heard even if it doesn't work.
The advise given can prove to make a player worse because it's never just one thing that effects a swing. It's always a few pieces that need to be fixed.