That seems both cruel, and needlessly harsh. Surely you yourself have weaknesses which could be exploited, and I hope that you’re not prepared to kill yourself over it. By the same token, telling people that they are too stupid to live is pointlessly cruel, unhelpful, and frankly wrong.
You can be intelligent, but old and suffering from MCI, or a more advanced dementia. You could be mentally ill, or brilliant in one field, but utterly ignorant of finances, or human nature. You could be a genius with TBI, or you could b young and foolish.
I can’t see what you’re saying as anything other than venting of spleen. Maybe it makes you feel better as a mechanism to cope with frustration, but I’d encourage you to reconsider that attitude toward your fellow humans.