I also understand the hilarious spin that you added considering tldr (too long didn't read) lmao. but still its worth your email.
Crazy how I realised that tldr meme after I had written the first paragraph
It's an unkind thing to do to your prospective users.
From Bleeping computer's coverage the last time someone tried to dump Relay in with a disposable email blocklist:
> Back in November 2021, Firefox Relay's team lead had requested the maintainer of a separate burner email list, "burner-email-providers" to exempt the particular domain form the blocklist:
> "We are operating Relay with a number of features that I think mitigate the risks that these aliases pose," Mozilla's privacy and security engineer Luke Crouch explained in November.
> Firstly, if a @mozmail.com alias is disabled by the user, any emails sent to the alias are not bounced back but instead discarded with a 404 error message returned by the service's HTTP webook, stated Crouch.
Secondly, he explained, the anti-abuse protections built into Relay limit free users to a total of five aliases, and further rate-limit premium customers so they cannot abuse the service by creating large-scale throw-away aliases for, say, automated signups to web services.
> With that reasoning, mozmail.com was swiftly removed from that blocklist. And it appears, the creators of "disposable-email-domains" have also honored the clause, for now.
To whom exactly are you talking to?