Exactly! But its not obvios. So most of those shitty websites don't even know they have a problem.

Then there are also people ignoring it on purpose. I once read a reddit comment saying 'well of your address looks like "John wick 🐶❤️"@2001:0db8:85a3:0000:0000:8a2e:0370:7334 I don't event want your email in my DB because oit will break something