I'd wager that 99% of these Android Fans wouldn't be here if there was no place for them to hang around.
Your "Join Date" says April of 2010 yet it sounds like this is your first day. I haven't been here very long but, as far back as I can recall, "these Android Fans" have always been here.
Additionally, I'd wager that, since the creation of the sub-forum, precisely 0% of Android fans have joined MR because of the sub-forum.
As others have noted, the creation of the sub-forum has enabled mods to move certain threads out of the iPhone/iPad/iOS forums, which, in turn, has made things a heck of a lot cleaner and, in my opinion, more pleasant.