If ignoring the rules makes it faster, then it's still faster. uv has never claimed to be 100% compatible. How often is it actually incorrect?

My groceries are cheaper if I walk out of the store without paying for them too. Who's going to stop me?

While I agree that an optimistic optimization for the upper-bound-pass case makes sense, just ignoring the bounds just isn't correct either.

Common pattern in insurgent software is to violate a specification, demonstrate speedups, and then compare yourself favorably to older software that implements the spec (however stupid) faithfully.