The UK's ICO also has a good structured summary: https://ico.org.uk/for-organisations/guide-to-the-general-da...
In general I agree with the sentiments in this article. I've probably spent a total of three to four days reading around the GDPR and I don't really see what's special about this law other than it's imposing decent standards on what was in effect a wildly unregulated industry in people's personal data. If you have a broad distrust of any government activity then I suppose any new laws with "fines up to €X" might feel like "I run a small site on a Digital Ocean droplet and I'm at risk of a €2m fine out of the blue." But that doesn't make it true.
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.
Sounds very workable.
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.