Nepomniachtchi is fine with the trade as the weakened dark  kingside squares might tell on the long run.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g7g6  4. c2c3  4... a7a6  5. b5a4  5... d7d6  6. d2d4  6... c8d7  7. e1g1  7... f8g7  8. h2h3  8... g8f6  9. f1e1  9... e8g8  10. b1d2  10... f8e8  11. d4d5  11... c6e7  12. a4c2  12... g7h6 This typical idea to trade the potentially  bad bishop turns out to be a novelty.