No. SSH connections break when I close my laptop. Probably happened several hundred times by now. The ssh executable terminates in this scenario exactly never.

No. SSH connections break when I close my laptop. Probably happened several hundred times by now. The ssh executable terminates in this scenario exactly never. I have to close and reopen the terminal window - can't even Ctrl-C. Come to think if it I've never once experienced the ssh executable actually exiting by itself. I don't know what problem this script solves, but it's not the ubiquitous experience of "When I close my Mac my SSH sessions in Terminal become frozen."