@thomasfuchs My brother signed us up for that thing years ago over my protest. The email I received had a mailto link for legal@23andme.com instead of the arbitrationoptout@23andme.com in your post and the Patreon page, which notes

> A reader points out that while the email directs recipients to "notify us" at "legal@23andme.com" the text of new the TOS says you must email "arbitrationoptout@23andme.com"

I'm sending to both on the same message just in case.