Why should web browsers treat http like a bug? Many sites don’t need https.
It’s not like ISPs are unknown entities.
Maybe intranet sites. Everything else absolutely should.
Sites that need HTTPS: - all of them
If you like it, you better put a lock on it.
And, BTW, the website is as delightfully simple and unobtrusive as the one in the article.
Unencrypted connections can be weaponized by things like China’s Great Canon.