If it charges 20x faster, that is the thing that deserves the attention
It certainly could affect the tradeoff between battery weight and the need to avoid having to recharge. If you get a 70% charge in only 2 minutes as claimed, you might want a lighter product and be willing to live with the need for one recharge during the day . . .
OTOH if Apple were to throw in on it in order to make better laptops and iPhones, maybe the idea isn’t really that farfetched.
The sapphire idea seems to have flopped, tho.