On that token, have you actually at all looked into how "proportionate" is interpreted legally? After all this isn't new and there are a vast number of regulations using the same legal language. Yet somehow business in Europe has not stopped. So prima facie your concerns are absurd, you have not brought evidence that there is an issue (or anything at all unprecedented really) and I have to wonder what motivates you.
As others have said, if you have no interest in complying with laws that protect my privacy, then it's appropriate for you to not do business here.