Many people forget that their email is included in the public key that is presented to the ssh server by default. So, the email collection form is actually somewhat redundant.
But yes, I added my share of funny email addresses to their list. Tradition is a tradition.
What do you mean? Public keys don't usually include an email address. They have an id that's usually in the form "user@host" but that's unlikely to be a valid email address. Maybe some systems use an email address there, but none of those I know.
A valid email address isn't the same as an email address that actually has an inbox behind it. Some of my ssh keys have an fqdn but there's no mx record configured for it. I used to use my bare domain, which does have an mx record, but I've never used real mailbox names for the ssh keys.
Really tempted to write a bot to spam that form... but I'll give them the benefit of the doubt and wait to see if they come back in a week or so.
I just don't get why I can't read the FAQ even though they're sold out. Kinda missing their moment here by having nothing to do other than give an email and quit.
Edit: somebody was able to order coffee through them (see below).