There really is nothing new under the sun.
I recall about 10-15 years ago there was quite a bit of talk about loading hot 90gr 9mm HP's to "beat .45 ACP". And yep, if you loaded them out to around 1600fps, they did, in terms of theoretical "power".
However, I notice that the powder companies downgraded their load data to a max of about 1300 fps pretty quickly.
In terms of practical usage, I can recall reading only one article that discussed using high velocity 90gr 9x19 loads successfully, and that was one author who used them for hunting, and reported mostly one shot kills on deer, from a stand, at short range, using bullets like gold dots that tend to hold together pretty well during penetration.
Frankly, this is nothing more than the same. It's a tired idea that has been recycled over and over again. Comes up at least every few years.
Light, specially designed bullets, at high velocity... Gosh darn, Gomer, I never heard of such a radical idea before...