That's an old post to quote...although the top GMs seem to be relying on chess.com computer analysis for their opening selection.
There are a few ways to reach the second diagram (not sure how to figure out the most common path) but via a semi-slav move order, it can arise after White plays the slightly unusual 8.Bb3 (first diagram; 8.Bd3 should be most common) and Black just goes straight for the c5 break, with White allowing the isolated queen's pawn.
After 8.Bb3
After 12...Nb6
What's your assessment of the opening?
Follow up question: after
what's the best continuation?