angrypuffer, the first diagram is the Tartakower variation and black does not have to play it. also, white doesn't have to play Nxf6+. he can play Ng3 and transpose into the Fohr variation of the classical mainline with a bigger advantage. in the second diagram, black still has the move c5 which leads to complex play. black still has a game.
everyone plays the tartakower, if people played Bf5 i would play the Nc3 variation as my main weapon
and also black does not have to transpose into the classical mainline
3.c5 is even better for white as he gets an easier advantage if he just does dxc5
lassus, in your diagram Qe5+ may also be an interesting idea because it would allow the Queen to move to d6. Maybe there is transposition to Qd6 theory? Idon't know, I don't play Qd6.