So, to be able to deliver goods to any of EU addresses I have to collect all the info listed above from potential customers.
And they have to give it to me, in order to buy anything online.
Are you sure it's about protecting customer's privacy, not exposing his/her most detailed personal data to as many foreign entities asd possible?
I think you're missing the point. You don't have to collect all that data to conform to GDPR; you have to conform to GDPR is you collect ANY of that data. The two statements are not mutually exclusive.
Without collecting that data I cannot tell if my customer is from EU.
And if GDPR should be even considered.