With the mid-gen refreshes that "generational leap" is a bit complicated... they'd have to wait a decent while before they could vastly outperform the Xbox 1 X while maintaining affordability.
I imagine the next generation of consoles will not be an enormous upgrade over the Xbox 1 X/PS4 Pro, but will still be substantially better. As they say in the video, the true "generational leap" will be when compared to the original models, and specifically will see a big improvement in the processors and memory.
Also, my lord look at that like/dislike bar on that video... Fanboys can be ridiculous, that was a very level-headed and informative video. Why is everyone so anxious for some miracle box to release so soon anyway? The Pro and Xbox 1 X already offer some very impressive visuals if that matters so much to you.