Rather, its a side effect (that people are trying to avoid).

Yeah, now imagine if people weren't doing that and the statement that a computers purpose is to run hot would stand.

See, the existence of the cooling bit of the system suggests a different purpose. You're making progress. So what parts of the social systems around you are meant to avoid the bad "side effects" you're suggesting. Might help to pick a specific example to talk about. Prison industrial complex and its purpose being to make things worse and traumatize people rather than rehabilitation would be my suggestion. But pick whatever you want.