Just because people are talking about one issue right now doesn't mean that they don't care about other issues. Pointing out the obvious that nobody should be sexually exploited is doing nothing other than shifting the topic away from the original issue. Hence, the "all lives matter" comparison.

The person you replied to is doing the same thing. Nobody should be sexually exploited, and there's tons of issues surrounding men's mental health and abuse. But that's not what we're talking about here. We're talking about AI being used to deepfake nudes and sexually explicit material, which disproportionately affects women.

If they had come in here to talk about men who had had this happen to them, that would be one thing. But they didn't. They came in here to minimize the impact the issue has on a specific group and to complain about how nobody is talking about a separate issue, respectively.