The Pounding Ends: Stockfish Beats Houdini 59-41 in the TCEC Season 11 Superfinal
That's 20-2 in decisive games. One of Houdini's two wins came in the revenge game for a 3...Be7 Tarrasch French, so one can blame that on the opening, and the other win was a 95-move win on the white side of a Dutch...so you can also blame that one on the opening. (No doubt the Stockfish programmers have been hard at work figuring out how they didn't manage to win their white game against the Dutch.)
Those were Houdini's high points, all two of them. Stockfish won 20 games, 13 with White and an impressive 7 with Black. (My two favorites were games 31, its white win in the 3...Be7 Tarrasch French; and game 81, which bore a little resemblance to the sorts of games it lost to Alpha Zero a few months back.) There were many other games where Stockfish had the upper hand, and it wasn't clear whether Houdini would manage to save them. So as convincing as the victory was, it could have been even worse.
Congratulations to the Stockfish team, and I hope Houdini's programmer Robert Houdart doesn't wait a year or two to make improvements, but springs back into action as soon as real life permits. (Likewise, I hope the Komodo team makes some big improvements as well.) Stockfish is doing great, but if they don't feel any pressure they might slacken the pace.
TCEC archives (the games can be downloaded from here).