Who are these people you are talking about? On one side they are looking for affordable 8c/16t systems, on the other side they are looking for "affordable" 16c/32t systems. What systems where they working on prior to the Ryzen launch, and what kind of operations and earnings their systems provide? Because it seems to me that for those who really need them, 16c CPUs would just pay for themselves.
The people I'm talking about are people who are trying to get machines that perform like the top end Ryzen does, which in my opinion is in the mid-range of the HEDT class. It's a tricky term to define of course and maybe we'd have a different opinion about that. But from what I can see there is a certain 'class' of content creators that 'save' by choosing Ryzen over i7, but without the current ability to 'move up' within the same Ryzen ecosystem. Or to put it differently; If someone can't afford a $1,500 CPU, or even a $500 CPU, but has HEDT needs, an 1800x would work well - but if AMD then comes out 6 months later and says "Oh, btw, here's a $799 12 core part that rivals Intel's $1,500 part" then that's going to be sour grapes if the line was drawn around $800.
Obviously, this is a narrow group of all people that buy HEDT products, but if your objection above is correct you're also agreeing with me that Intel's HEDT isn't dead at all. If it has the performance lead and people can pay for it because it pays itself back (and it does to many individuals and companies) then it isn't a dead platform.
What I really can't understand in your point of view is how you consider R7 to not really be the equivalent of Intel's HEDT due to connectivity issues (debatable but fair enough from a certain perspective), yet you definitely see a conflict between R7 and whatever the X399 platform will bring to the table.
Objectively it isn't the same. I think we can agree on that. As for why you're seeing a discrepancy it's pretty much as I explained it. You can get far on a Ryzen system but the risk is lacking headroom when you need it.
Suppose I decide to delve into video editing and color correction/grading. It wouldn't be in the high-end of the market if I do it on my own system, at least not for the first year since I'd be learning a new skill. Since it's a bit of a wager to embark on that I'd be looking to keep costs low but performance high, at least in the beginning. Therefore, Ryzen makes sense, in the beginning. If I use Premiere I can deal with quirks that put Ryzen behind Intel CPUs in some workloads, and if I use Davinci Resolve I can make do with only one GPU for acceleration. But as soon as I start making money and saving time becomes more important, as well as connectivity, I have to look at something else.
At that point I would be 'miffed' if I hadn't been offered a somewhat pricier x399 from the beginning.
And to top that off, you will believe X399 when you see it, but at the same time you see a timing conflict between AM4 and X399: between a platform in such early stages that you don't even fully believe it exists, and a platform that was already launched.
I don't see a disconnect above. What's the problem exactly? People are assuming x399 exists and is on the way to the market "soon", or "very soon". If that's the case then it's exactly the type of nuisance I'd expect some people would be annoyed by, the group of people who figured "I want to support AMD, and this Ryzen thing is like 90% there, so I'll spend my money on it" only to discover that all of a sudden AMD has exactly what they need for exactly the money they would have been willing to spend.
But really, all I was saying was that Intel's HEDT isn't "dead", that's just wishful thinking, and that the x399 has been super-hyped and I'll believe its existence when I see it. It doesn't mean I don't think it exists, just that people make up all sorts of things for all sorts of reasons, and I typically wait until there's definite evidence of a product before I get all excited about it... - and again, I possibly missed some AMD announcements.....
These people in the market for high throughput performance computing must have some seriously conflicting thoughts about their needs and the future.