I looked at his games and yes my suspicion was correct. Sveshnikov frequently plays 5. dxc5, and with great results.
He thinks that while both are winning 5. Nf3 simply leads to an easier win
The last time he played 5.dxc5 was 26 years ago, against Nukhim Rashkovsky.
True, but I think we can both agree that both dxc5 and Nf3 are strong moves.
Magnus Carlsen hates playing against the Alapin. Look at the game I posted earlier in the thread where he played GM David Smerdon who completely dominated Carlsen using the Alapin