Earlier quoted context omitted.
Eh, the good part of a computer Rubik's cube solver is not seeing the cube solved in nanoseconds, it's in making the computer. The cube itself is just a unit test.
But a Rubik's cube solver is a single-player, solitaire game. Its fundamentally different. Over in the "Cyborg Chess" community, people have already analyzed LeelaZero vs Stockfish. It turns out that Stockfish is far better at tactics (especially the endgame), while LeelaZero is better at opening positions (aka: Positional play). There are numerous theories about the proper combination: perhaps using an Opening Book…
And then program the computer to use that opening book directly. Now what is your cyborg player going to do? After you patch all these easy rules, you will have to discover harder rules, and the computer can discover them faster than you can.