I feel like you're conflating three things -- software installation, account closure and disabled hardware.

Software installation has nothing to do with account closure, so I don't know why you're bringing it up.

Account closure doesn't disable your devices. You can set them up with a new account.

And if devices are disabled due to theft and can't be reflashed for sale on the black market, that is a good thing. I haven't heard any reports of people's legitimately purchased devices being disabled due to theft.

Clearly you have things you don't like about Apple, but I don't see what they have to do with the subject at hand, which is account closure.