Either you get shown the door because you refuse to take part in unethical behavior, in which case you wouldn’t want to return anyway. Or you get shown the door because you’re simply not welcome or because YOU are the unethical one, in which case no means no.

I’m sure someone will be able to come up with some kind of edge case where this logic doesn’t work, but that doesn’t matter. This is about websites saying no to agents, bots, and scrapers. And no means no.