My money says it's not, the video didn't look like anything other than a poor magnet.
Everyone wants to hope they're living in the time of the next revolution, and I hope we are as much as anyone else, but it's not going to be "toss these 4 elements into an oven and cook". Super conductivity is going to be an extremely precisely engineered substance.
If cheaply manufactured low production cost room temperature super conductors are ever available our world will look like that within a decade. Unfortunately we are probably going to cook our planet before we get within 15 years of the above discovery
I mean, even if LK-99 turns out to be legit but insanely expensive to manufacture, that's a starting point for research on how to make it easier to manufacture.
Data storage used to be incredibly bulky and expensive. Now you can buy a chip the size of your fingernail holding hundreds of gigabytes of data for a couple ten dollars.
If they'd said I'd was insanely expensive, or time consuming, out used really specific isotopes of the elements they're using, I'd be much much more inclined to believe them.
The specificity that room temperature conductivity they're claiming to have achieved (an entirely new variety of super conductivity) by having certain atoms in certain orientation to allow for quantum tunneling, doesn't just come out of an oven after a few days of cook time, the atoms would need to be aligned, and all of the same isotope, at the masses they supposedly demonstrated the odds of it all occurring are beyond atomically small.
They wrote what was a guarantee to capture the attention of the media, cheap, extremely efficient, and very safe/easy to produce. When/if room temperature super conductivity comes it isn't fitting into all 3 of those things.
Yeaah and there are so many tech products that have only become a reality in the last 20 or so years. Robot vacuums, consumer 3D printers, LED lights, batteries that actually hold a useful enough amount of power for high power devices which actually even our phones are. Crazy that my phone is ridiculous amounts faster than the first computer I used, yet it lasts a full day on single charge. People take all of this and more for granted.