Yes, the rules of chess are simpler, which is why all this happened many years ago for chess.

https://gwern.net/note/note#advanced-chess-obituary -- here is a reference about centuar/advanced chess. The source isn't perfect as the tournaments seem to have fizzled out 5-10 years ago as engines got better and it all became irrelevant. Sadly this means we don't have 100 games of GM+engine vs. engine in 2023 to truly settle it but I've been following this for a while and I have a high confidence that Stockfish_2023+human ~= Stockfish_2023.