Problem is that Rodney and King George V pounded Bismarck's upperworks to scrap. They did more than mission kill her, they destroyed her. Ok, not sunk, but as a fighting unit she was dead. You don't need to sink a ship to kill it. Destroy it's ability to make war and the result is the same, and that is what happened between Bismarck, Rodney and King George V when they met.
After that, Bismarck making it home is irevellent. She has 2+ years of repairs if she makes it. As had been posted here, without guns, even with 30+ knots going for her, she is unlikely to get home as she will be hounded by destroyers, aircraft and cruisers the whole way, who will fire torpedoes into her. Sooner or later her torpedo defence system will be overcome by acculuminated damage and she floods and sinks.
Well said and I'm glad someone's said it.
The ongoing myth/bullshit that "the rn didn't sink the Bismarck" is irrelevant, because at the point she was scuttled she had been reduced to a burning hulk with a mostly dead crew slowly going in circles.