So even if you take the Russians at their word, they've just been forced to use a claim of one kind of incompetence to try to head off reporting of the fact of another.
Also, as per the Russians (not the Ukrainians), the crew has abandoned ship. Not, "the crew is on board putting out the fire", or "the crew is restoring the situation to normal". Naval crews generally abandon ships that are going to sink.
https://news.usni.org/2022/04/13/russian-navy-confirms-severe-damage-to-black-sea-cruiser-moskva-crew-abandoned-ship