Author here. I do know about VMs. Is it too lazy for me to write that article and not bother to install a VM with Mojo (and Rust and Julia, to benchmark in the same environment)? Maybe. If this was for my work I certainly would have felt compelled to.
On the other hand, the fact that Mojo doesn't run on Windows and most Linux distros is a point in itself. And also, would the blog post really be substantially improved if I had gotten the number of milliseconds right for the Mojo implementation on my computer? Of course not. It should be clear that the implementations are incomparable, and that a similar Julia implementation is very fast which implies that the reason the original Mojo implementation allegedly beat Rust is not because Mojo is faster. It's just a different program.