True (I was finally able to get the Manifesto Destiny quest to work without actually sky riding), but it does take a considerable amount of time and effort greater than what can be achieved with sky riding.
My personal experience (and yes, this is “anecdotal evidence”, another logical fallacy lol – I don’t want to be a hypocrite here) is 3-4x as long. That’s with a stealth class, too, so I really feel for those non-stealthies trying to do this with a ground mount only.
However, I don’t think anyone’s saying it’s impossible to do. Just that it isn’t “fair”. It’s also never had a reason supplied as to why steady flying is locked behind PF (from Blizzard). At least, not that I’m aware of (and believe me, I tried)