I have the i5-6600k and a GTX970 with 24gb RAM, it runs BfA in 4k at around 30-35fps.

IMO 20fps is playable, anything above that is just nice to have. Raid/Dungeon FPS is usually half what you get in outdoor / city areas.

I would say that the specs are about right for 60fps. But you don't "need" 16gb, the game only loads around 3-4gb in RAM

so you can probably get by with less memory and an SSD game drive (which costs less than 16GB RAM), maybe even Optane SSD's if it gets to be cheaper.

WoW has presets from 1 to 10, what they mean by high detail? :)

At maximum settings yes, but for playability, not really. Particle density is one of a more important setting that you'd want it to be higher, but it does kill any mid to mid-high tier graphic cards when there's a lot of smoke/fog/dust on the screen. View distance is another killer, for CPU though, to generate objects from afar, but also cause GPU problem since there's more objects to draw and render. If you find a sweet spot, it's not that demanding. I was able to play it on my XPS 15 9560 with 1050 notebook version at 4k and get around 50 fps on average, that is not in raid though. And as for AA, if you have a small enough 4k screen, or it is far enough from your eye, you don't need AA at all...

Why do you need a high end graphics card to play a simple card game that can run on a cheap phone a few weeks later?

LOL, bullcr@p. I can play Wow with Intel integrated graphics 4400 and a i7 4510 CPU at low/medium settings. Is this another trick by Nvidia to boost GPU sales?

Same with me yesterday. Bought new laptop with GTX 1050 Ti and i thought it is a overkill for WoW. Then NVIDIA expirience ruined my day.