I don't think you're missing anything, Chris. I don't know Mr. Jay and can't say what his reasons are for his stance which I think sounds disrespectful to the person who introduced him to the rest of the world. He says very plainly that "focusing on strength first is wrong". His words, not mine. I do find it funny that a person who focuses on physics and physiology has a gripe about a word like "strength", which has many meanings and interpretations and yet plugs the idea of "fast" which is also a relative word. Kind of like the word "cold". Cold is a subjective measure. One can only measure heat objectively just like you can only measure speed and velocity, not fastness (is that even a word?).
I believe he could make his point and just say that focusing on power production and not absolute strength is what he prefers. He states that training with attention to repeatable power performance and higher power production will result in a more "athletic" individual. He also advocates for different positions to develop athletic ability with the kettlebell and elimination of unnecessary tension. I don't disagree with anything he's saying but what he's saying is not completely a 180 of what is taught in this organization, at least not from what I've seen. I recall that Pavel has said that the role of tension is to be able to transfer force to the desired movement : KB press, one arm pushup, etc. However, he has also stated that there is no need to generate more tension than is necessary to perform a movement, especially after mastery of the movement and the weight. Perhaps that view has changed over the years, but I haven't seen anything to the contrary. Also, Mr. Jay doesn't say that he doesn't train, or doesn't advocate training, with high percentage of 1 RM. I find the lack of transparency disturbing in that regard, but in any case I find myself very mixed on Mr. Jay. One the one hand I like that he presents the scientific basis, sometimes limited, to back up what he shares. However, he hasn't learned the quiet modesty that I feel Pavel, Mark, and the rest of the SF organization have displayed, most notably in any reference to the current RKC. It is in fact his insistence on breaking down others' views in a non-scientific way that has kept me from attending his certifications, and similarly why I also choose to stay away from a CrossFit certification. If the overseeing management structure or leadership acts in a way that doesn't seem mature or ethical, then why align with it at all?
With regards to VWC, you're not missing anything. He seems to still stand behind VWC in general, yet states that the KB snatch still falls short of longer duration cardio. It's all in the marketing, really. Cardio has no real definition (much like "fast") so he is now defining cardio a different way than he did with VWC to suit his purposes. I'm mixed on that, too but he seems to be making money off the whole deal and seems to still be able to share some decent information. You just have to look past the marketing garbage.