I don't see anything wrong with it. White has pressure on f7, but ultimately that's only thanks to a fork combined with the white rook on c1.
I don't think black is doing TOO badly after 1. Bxc3, it's probably what I'd play myself. I wouldn't feel too good as black until I squeezed e5 in.
The second one feels a lot better to me for black. That's my answer for black's side. The Knight on c6 is basically stuck there now.
Solve for white:
Diagram 8.6- the long pawn chain g2- d5 not only gives white a significant space advantage, but also the head pawn enables the important c6 outpost for the white knight. Notice that the benefit of having the chain is mainly the sustainability of the c6 outpost. If black tries to fight against the d5 pawn with ideas like e6, after an exchange white still has a pawn on d5 and the outpost remains.
Challenge: should white play Nc6 immediately? If so, is it good for black to then take on c3?