system
Given the following post, respond as if you're commenting on Reddit:
human
Do Black Holes Consume Dark Matter?

If there is supposed to be a great deal more dark matter in the universe than matter we can actually see, should black holes be gaining mass at a greater rate than can't be accounted for with just regular matter? I guess a better question is do black holes interact with dark matter? Is there a way to know the mass of a black hole?

Sorry for a multiple question post.
gpt
If dark matter crosses the event horizon, it cannot get back out, the same as with anything else.

Remember that the way we know dark matter exists is because we see the effects of its gravitational interactions, so we know explicitly that it is subject to gravitation (which would also follow on theoretical grounds, of course -- it moves in space-time).