The same thing breaking any license does. If you do it in your basement, nothing by definition. If you incorporate it in a service or distribute it as part of a project, well then you're on the hook. (and that is what license holders tend to care about)
I called him out in another thread. It makes absolutely no sense. He is talking against himself, judging by his comments.
To answer your question, he modified my comment (see the parentheses):
"> The point is, who gives a damn about (doing an illegal thing) in reality, on their (private property where nobody is likely to see that)?"
So... at best what he said is purely theoretical. He admitted it himself: "nobody is likely to see that". Though I am not sure I agree with it, but then again, in reality, no one gives a fuck, at least not in Europe.
There are likely multiple potential issues here, but one specific example: Processing and storage of PII without consent/authorisation is not allowed, regardless of whether you do it yourself or for others. And you can't guarantee that this model does not contain private information hoovered up by accident.
breaking license will do what? whats up with licenses and violations? you and me are random people on internet