Worth noting that AnyList automatically subscribed me to a marketing list without double opt-in or any kind of consent, which is exactly the kind of behaviour that makes me not want apps to have my real email address.
These seem to just be contrived arguments to protect their customer data selling bottom line.
Seems out of place to complain about not having email addresses for "support" reasons.
If they truly cannot help users without asking for their email address, maybe they should not have users (login) then.
The blog post was long and winded. And it brought up some very desperate arguments, like the bug bounty offered to hackers when they report security vulnerabilities.
They want people's email addresses, period.
They say that no email breaks the sharing feature. True. But that's something that can be offered later when someone actually does share something with you. They say that the emails will go to the a seldom checked account. True. But users can change email addresses. They say it breaks support service for looking up accounts without email addresses. Again true. But what's another way of looking up accounts? Username. What is another? Apple ID.
They are email network harvesters. Plain and simple. And this is their business model.
And to extend that, if they are a spammy company, that would be exactly why they would be complaining about SIWAI.
Side note, disabling 'load remote content' in email client stops all spam in a while, they think emails are not read.