This is false. Passwords are only as sensitive as all the data they access. Given that it's impossible for you to know what other data the user is protecting with the same password, you must assume all passwords are as sensitive as the most sensitive data a user might reasonably secure with that password.

Do I wish things were different, and that everyone on earth used unique passwords for every site? Of course. But I think you know that's never going to describe reality.

As someone who runs like a roleplaying site for like ten people (or several of them), I cannot be responsible for other people's bank passwords, nor should I be punished for daring to host websites without the huge added burden of cost of HTTPS.

The notion that every homebrew website is supposed to support HTTPS is also never going to describe reality.

Then really, Google's done you a solid. Now everyone using your site will know it's not as secure as their bank, and therefore, when their creds for your sites are stolen, and they get their identity stolen as a result, you can just say "Hey, everything told you it wasn't secure, not my problem"...

You should not be responsible for running any of the sites with this attitude.

Again, this is not a productive or useful security attitude to take. We've made some grave privacy missteps with poor security advice time and time again, so simply saying "HTTPS is better and everyone should use it" is not inherently accurate. Especially when it's completely impractical with the tools available.