I am one of those folks definitely affected by the forum format change. Pure and simple I can not post as often as I used to. Why? My old phone and its' software does not seem to interface with the new forum software to allow me to log on. I can look but not post. And considering that at least roughly half the time that I can be, and have been on here is via mobile/phone, that put a big dent in my participation. Now I may see something that I want to comment on, but when I have access to my laptop or desktop to do so I have forgotten or my post just doesnot have the same urgency that it did in my mind earlier. Do I see the issue getting resolved- no. It's been a couple of months and nothing has changed.
Add to that fewer posts on here overall that I want to comment on (due to fewer posts being made currently), and it is a downward spiral in my view. Is the site dying? Only time will tell. But currently it is not thriving as it used to be.