With all of this popping up: how are you even supposed to run an internet service in the EU? Do you have to write all pieces of the software yourself or what? Since all the big services seem to be off-limits.
At least if you're US-based and not accepting money, I have one bit of advice: just don't care. Even if they complain, don't care. The Internet is global; if they really have an issue, they can block your site, or they can just put up with it.
If you're gonna sell a product or service, then worry about figuring stuff out.
In theory you could individually be sanctioned, prevented from entering EU countries (or face the courts upon doing so), etc. Gotta cross a bunch of countries off of your vacation list.
I don't think the EU would do that (except maybe against some mega billionaire?). That would at least begin to sour their relationship with the US and potentially many other countries.