Right back at you.
Ok, let's look at these facts, and more importantly, the implications...
It puts less people on the ground in the spaces between points of interest. However it increases the concentration of player activity at points of interest.
I'll be blunt. In the year without flying (as was the case in WoD and Legion too) 90% + of my interaction with other players was at points of interest, not in the space between where people are just generally focused on trying to get where they're going anyway.
So even though, mathematically, you may be correct that there are less people on the ground (because some of them are in the air), it actually results in more player interaction.
Sure. And that's important for new content. It's not important at this stage of the expansion, and hasn't been important for nearly a year now. If you're interested in the "facts" the simple fact of the matter is that kind of forced immersion this late into the expansion detracts from the game experience. It's boring, it's tedious, it's not challenging, it adds nothing to our experience except to waste time - time which would better spent doing actually meaningful content (of which there is plenty).
That's bullshit, based on bad logic. But hey, as you accuse mr Cowdog of doing, you just conveniently ignored the fact that you've been rebutted on this already.
Flying cannot be held responsible for any reduction in WPvP because it doesn't force people to disengage from WPvP. Flying is simply a tool that enhances people's ability to get to where they want to be. If they wanted to be engaging in WPvP, flying would actually be resulting in more WPvP because people would use it to seek out and find where other players are. You can cover a lot more ground from the air in order to seek out those interactions.
No. The fact of the matter is that players choose to use flying to avoid WPvP because they don't want to engage in WPvP. Stop trying to scapegoat flying for a problem it is in no way whatsoever responsible for.
If you want to know what the real problems are, look at the fact that Blizzard feel compelled to offer superior rewards for going WM. Most players only enable WM because they want that bonus 10% rewards. They don't give a toss about WPvP, and truth be told, if given a choice they'd avoid any inter player conflict at all.
It's not about "convenience". It's about what makes for the most fun. And at this stage of the expansion, having to waste time trundling across the same time-consuming and annoying paths that lost their charm nearly a year ago, and having to "fight" through a bunch of trash mobs who are basically nothing more than an annoyance because they stopped being an actual threat nearly a year ago, is not fun gameplay.
Being able to get a bird's eye view of the world gives me a fresh perspective (and appreciation) of the zones. It also entices me to actually explore more of the world instead of simply trying to find the fastest way to get over it. It makes a lot of stuff like hunting for treasure, doing exploration achievements, archaeology etc - activities that I was quite to ignore before - actually worth doing.
Importantly flying lets me get to the stuff I want to do - the enjoyable gameplay - with less of the crap I am simply not interested in.