I agree.
Relative to iPhone 5 discussions, there are very few 4S discussions these days. The only change that has come to the 4S recently is iOS 6 and that's not exactly device-specific (somewhat, but not much between the 4S and 5) so, really, it's a non-factor. iOS 6 discussions can go on almost without having to mention the phone involved.
From my perspective, the lack of new 4S discussions is potentially an extraordinary thing. Maybe this is the result of people having discovered...wait for it...
wait for it......
the search function!
Seeing as practically everything related to the 4S has already been discussed, as
paulrbeers pointed out above, a simple search will almost certainly get you whatever question you may have about it. As such, the relative disappearance of 4S discussions is, in my opinion, a good thing.