Given it was over 20 years before Lithium batteries were first proposed and when they were commercially viable, we're probably being a bit harsh.
I don't even take new battery tech claims seriously AFTER a company begins shipping product. Wake me up when a new battery has been independently tested, the economic viability has been demonstrated, and factory capacity is ramping up to supply enough product to make a meaningful impact in the market.
“Toyota’s all-solid-state EV battery plans officially gained approval from Japan’s Ministry of Trade and Industry (METI). The certification gives Toyota the green light to develop and build next-gen EV batteries as part of Japan’s plans to boost domestic supply.”
Seems like it’s more legit this time.
They got two. And the Olympics were postponed.