What, like 10 years? So we should instead go back to being influence by the oil industry?
Our energy production technologies isn't ready for widespread FCEV, it's just not energy efficient enough to produce clean hydrogen yet, so we still rely on the oil industry to produce the Gray/Blue hydrogen in vastly greater quantities than the Green hydrogen which would actually offer significant climate change benefits vs a petrol car. But hey, something to be said for slacktivism right!
FCEV's currently cover both sides of the coin, they're able to be used with renewable energy created elsewhere like a BEV, or from non-renewable sources like dino-burners. The technology offers some benefits in range and 'recharge' time but efficiency is key in so many applications.
Long term FCEVs will be a dead end the same way that Lithium Ion batteries will be, but both systems are stepping stones in the right direction, and we're seeing a lot of innovation that comes with exploration of newer technologies that can only benefit the industry/products/consumers overall.
To be clear though, Elon needs to pull his head out of his arse, and drop the battery semi truck idea until techology catches up.