Because they are Normal realms, and people don’t flag for PVP on Normal realms. The idea that Flying (or anything) kills PVP on a PVP flag-optional realm, and particularly for HC is largely meaningless, but I was more nitpicking the reference that “flying killed wpvp.”
To be fair, I think it’s a valid reference to cite in that for sure people have said this for a very long time. My point is that while people have maintained that this is a thing, flying has almost no impact on WPVP. Especially in stark contrast to the changes between say ranking becoming available without instanced PVP vs with instanced PVP.
In what regard? You can’t mount while in combat, and if you can drop combat to avoid dying, you could without mounting or flying, anyway.
I suppose that there may just be far more AFK or not paying attention while mounted, and running into NPCs deaths in HC than any other form of death, but I find that kind of far-fetched.
