Most of the Lemmy instances seem to require an email to sign up. That's fine, except most of the places you would go to sign up for email want you to... already have an email. And often a phone number. And almost always a first name, last name, and birthday.
I promise not to do bad stuff, but I don't want that sort of information able to be publicly associated with my accounts where I write stuff, when everyone inevitably loses their databases to hackers. Pseudonymity is good, actually; on the Internet nobody knows you're a dog, etc.
Is anyone doing normal webmail registration anymore? Set username and password, receive email for free? I don't even need to send anything to sign up for accounts elsewhere.
I use anonaddy and bitwarden combo, you can add anonaddy's api to bitwarden username generator and generate temporary email addresses straight in bitwarden. Makes creating accounts so convenient by generating the temporary email address and password in the same place.