I dont think they are being lambasted, they should just put a warning on their site. Email is a very messed up ecosystem, and people who use email don't understand that. This is very cool, there should just be a disclaimer that this is a side project and will break often. Email is notoriously a pain in the ass if it's a full time job, much less a side project that's losing money. He's not selling this to quirky techies, his primary advertisement was tic tok. That's kind of irresponsible to not warn people this should just be for fun.
You're not wrong per se, but rather: there should just be a disclaimer on Email that this is a very messed up ecosystem and will break often. It's not specific to xn--ds8h.kz et al.
