Reading through here, the point about "once it's over 4ghz per core (and IPC is good), does anyone really care?" I think, is quite a fair one. It's not an angle I'd really considered at least.
IPC of course will make SOME difference but if it's 8c/16t * 85-90% 7700k speeds for 7700K prices, I think that's a race that barely needs to be run.
There's loads of us still sat on gen 1,2,3,4 core processors because there's next to sod all difference once overclocked. It's to a point where it's only really worth upgrading for new features or bigger PCIe bandwidth.
Pretty much anything games wise, unless you want to run at 1080p at a million fps is going to be GPU limited once IPC and clockspeeds get to a certain point and everything says Ryzen made it over that line quiet easily.
Now factor in double cores/threads or half the price, XFR on the "X" chips/overclocking on all and lower thermals...