Thanks, Brendan. That was an exceptional blitz game. I don't think MC's concepts would have been extraordinary in a slow time control setting, but remarkable in blitz.
Funny thing...I hadn't seen the game, but as soon as John called out "Here comes a novelty on White's 5th move", I immediately guessed 5. h2-h3. Principle of "most reasonable looking weird move", I'm actually surprised it's a novelty. [Compare the Najdorf Sicilian, probably Black's best chess opening, where (paradoxically) any non-ridiculous 6th move by White , including the trendy 6. h3, is eminently playable. 🤣]