I really do not see how discrimination in an exam applies to a completely voluntary site like PM. I skimmed through most of that article, but I do not even see the overextending reach of the EU. I mean, if a local (UK) company contracts with a US company to provide testing and those tests discriminate against e.g. the blind, then that's a local (UK) issue. And that means the US company was doing business with a UK entity. It's apples to oranges.

I suppose one potential issue could be if the Perl Foundation receives money from people and/or organizations in Europe, but I think even that's a stretch.