[y_molodtsov]

Then these websites are broken and needs to be fixed. In the end, the most of the people would probably search for it in the first place.

[horsawlarway]

broken according to who, exactly?

It's entirely reasonable to choose to host http/https traffic on a www subdomain and host entirely different services at the non-www domain.

The internet is not just http traffic. Full fucking stop.

There are plenty of systems and industries where the actual web front-end is an after-thought.

[aaomidi]

This is a stupid argument. Subdomains are part of the standard of the web. They shouldn't be hidden.