This is a good reason for not using any of the new vanity gTLDs though as they can make their own rules unlike old gTLD (which are regulated much more closely by ICANN) and ccTLDs (which are regulated by the corresponding country).

I understand that some domains carry some legal attachment. That the new vanity domains are not as trustworthy as others, some are even filtered, as email validators reject it for not being a "valid" address even. Some TLDs need to have a business registered on a location, etc. And I understand that the oldest ones (com, org, net) are among the most universally accepted. But I don't know what carries greater risk: 1. me losing control over my domain, or 2. me losing access to my email account (Posteo in particular - I wouldn't just trust any email provider).