It's actually pretty stupid. It's not like you can just f***ing abolish the two seamer/sinker. You seem to speak as if 2s usg should just continue to progress towards 0 or something. It's a useful pitch when you use it right, just like any other pitch.
You can't fix every single pitching thing by saying, "He's not throwing this kind of pitch enough! He listens to his pitching coach who is promoting the evils of this pitch! He should ignore his pitching coach and denounce him in the media." Like, you think Happ is gonna say, "Walker, yeah, f***in hate that guy?" Jesus. You post some variation of that several times a day fairly frequently. That's not how it works. There are many things that make a pitcher good, and it is not limited to whether he throws a 4s or a 2s.
Halladay and Webb were pretty decent.