All of a sudden the Caro Kann is making a comeback in virtually every high-class blitz tournament. Carlsen played it, Firouzja played it, Harikrishna played it and Grischuk played it as well. Probably Stockfish 12 has found something, I didn’t check. They all had to face the Advance Variation, so the issues in the Two Knights Variation must have been fixed. Here is where to look for:
Play it safe!