Earlier quoted context omitted.
That is absurd and wrong. The law says the fine needs to be proportionate: GDPR 83.1: Each supervisory authority shall ensure that the imposition of administrative fines pursuant to this Article in respect of infringements of this Regulation referred to in paragraphs 4, 5 and 6 shall in each individual case be effective, proportionate and dissuasive.
Proportionate is in the eye of the beholder. As I stated in another response, an example might be that a low-level offense receives a fine of only 10% of the maximum - just $2 million. And apparently I don't need to worry, because I can just spend six figures hiring an attorney in a country I've never been to, who possibly speaks a language I don't, who will fight the case for me if the fine is out of line. Sounds ve…
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.