This thing is obviously severely mentally ill and should not even be bagging groceries at a supermarket
Why would you say that? Are you being serious?
No. Just a joke, why take things seriously?
It's not right to joke about people who are mentally ill and say that they aren't able to do things. Many people suffer from mental illness and are able to lead perfectly normal lives. I think the stereotype that mentally ill people are somehow different from everyone else is really harmful.