looks like they changed specifications/tests on this after it got popular.

It's not changing the specifications, rather fixing an oversight I'd say.

at least invalidate the honor/rank/completion of everyone who did it before.

That would burden the server workload I guess. But it would be in User's obsolete solution for them to make another attempt.

this is a completely different kata now from the description and previous solves could definitely not solve this.

Me as the one who made the fix did not change anything from the description.
And the solutions that passed before the update shouldn't even pass in the first place because of a slight oversight from the original translator.