Different VMs result in different identifiers.

Creating a new identity in the browser in a disposable VM does not start a new disposable VM.

I never said that. I only assumed that a user followed the docs when using Qubes-Whonix.

A dangerous assumption for someone who styles himself as the introducer of Qubes OS to new audiences.

The saying about assumptions is as true as ever, unfortunately for both of us.

People who use tools incorrectly bear responsibility for corresponding dangers themselves. They can always ask for an additional advice or more details. I don't understand why you are attacking me for that. See also my answer elsewhwere (and please stop repeating the same thing in every comment thread): https://news.ycombinator.com/item?id=47878794.