Glib, and not true.
Otherwise Windows could make WSL (1) faster than Linux, but they can’t because they don’t have the similar enough underlying operating system paradigms.
I could give examples, but I think just comparing native python performance on both platforms is the easiest case I can make without going into details.
WSL 1 was faster and better than WSL 2, but they abandoned it for its technical complexity and switched to containers / virtual machines, which create a slew of Other Problems.