This is not a joke: it stands for Intelligent Design.
When pronounced english ID pretty much has the same connotations in German as in English, but the phrase “Intelligent Design” isn’t connected to creationism in Germany (or rather, creationism wasn’t a culture war issue here in the first place).
When the letters are pronounced in German, it sounds like “Idee” (idea), but I’m not sure if they’re leaning into this, nor whether the average person will have that association.
AFAIK, EVERY1 (garyoldman.gif) is a working title and it’ll end up being called something different.