A good move, centralizing the queen and preventing Qe5. It looks scary since Black can play 17...Bc5 and capture on e3, but this is not such a big danger.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. b1c3  3... g8f6  4. d2d4  4... e5d4  5. f3d4  5... f8b4  6. d4c6  6... b7c6  7. f1d3  7... d7d5  8. e4d5  8... e8g8  9. e1g1  9... c8g4 This curious line, in which Black delays the capture of the d5-pawn, is considered by theory to be one of the best ways for Black to achieve equality in this opening. 10. c3e2 Only the third most played move. 10... c6d5 It's finally time to restore material equality. 11. h2h3  11... g4h5  12. c2c4 White's idea is to break the black center and create a weakness, but this is too little to gain any advantage. 12... d5c4  13. d3c4  13... b4d6 This very good move is almost a novelty. It has never been played by a titled player. The bishop starts looking at the kingside and White needs to take some defensive care. Black is preparing Qe7-Rad8 and in some lines Qe5, threatening mate. 14. c1e3  14... f8e8  15. f1e1  15... e8e3 A thematic exchange sac to attack using the dark squares. Of course Firouzja spices the game up at the first opportunity. 16. f2e3  16... d8e7 