I don't have a problem with Carnival deciding that someone is too much of a risk to have on board in light of the safety of other passengers and crew members--or their own safety. However, we don't have to look down our noses at them. A person who is struggling with their mental health or even suicidal is often in such a bad place that they are not sitting there thinking to themselves, "Is this behavior 'acceptable'?" If they are manic, they likely aren't even aware of what they are doing. If they are depressed and attempting suicide, they are in the darkest of dark places. Maybe even came on vacation to try to get out of the dark place and then that didn't go well. Who knows? The point is, there is no need to talk about them like they are trash.
1 in 5 adults are affected by mental illness...and there has been a 25 percent increase in depression and anxiety since Covid hit with women and youth being hit the worst. If you don't know someone who has struggled with their mental health or even thought about or attempted suicide, count yourself extremely lucky.