It's how they're written, but not how they work. In reality, that type of claim is not enforceable. It is a good signal that they will attempt to prove infring

It's how they're written, but not how they work. In reality, that type of claim is not enforceable. It is a good signal that they will attempt to prove infringement on your outside work though, and you can't ever guarantee a win in that kind of court case; the case-law is too messy and depends heavily on unproveables like 'intent' and 'reasonability'.