Look at my post count. I bet at least 15000 were on TAT. I was probably the most active user in this forum through that app. I was not around much for a few months after the change, partly because I was dreading changing the work flow I was so used to. I finally took the leap in the last month or so and can 100% say that this new forum does everything that TAT did, but better. And there are a lot to things that you could not do on that app. Like actually reading the Pool School articles and seeing those links.
While I can see that having everything in one place can be nice for those that go to a lot of forums, TAT has some huge negatives on the back end and at this point I do not see TFP ever going back.
Hopefully if you take the time to use the new format, you will see its benefits, like I finally have.