Yeah if you read my original comment the catchall is for that small amount of signups that blocks Addy and SimpleLogin.

A way to create some mitigation of this issue can be done using a service like Njalla or Porkbun where you can make the account annonomously and pay in xmr. Sure, all the bullshit signups are still tied to a single domain but that domain isn’t tied to anything.

Have you considered just buying a domain to use as a catchall address. That’s what I use for the small % of services that refuse my simplelogin emails.