Many are, but as far as I know, no hosting provider has ever tried something like what was claimed (which is why it made such news).

It seems like many people didn’t even verify that portion of ToS was new (checking web archive), or wait for Vultr’s response before closing their accounts.

Even after the official response, it feels like people stuck to their original assumptions and felt justified moving services?

Companies, and specifically the people in them, make mistakes. What matters is their reaction. I’m scratching my head to think what Vultr could do better in this case (other than creating a time machine to avoid the initial screw up).