> If someone in the EU puts some personal info in an envelope and mails it to me and I never get around to opening it and it just sits on a stack with other junk mail, am I now violating their human rights by keeping the info they voluntarily sent to me?

Everyone I've tried to make this point to has ultimately said something to the effect of "yes, you're violating their rights by not throwing out the letter." It's baffling.