Actually the current state of the art of H2 is fundamentally safe so to say, e.g. it's wrapped into some sort of oxide. But the most important cars on the market (of which there aren't many types) still use the 1st gen approach which is a bit unsafer.

I think there are solutions to the show stoppers of H2. But the package isn't very appealing, at least not for individual transport.

Also what makes EVs appealing, they've reached a state of convenience that makes them feasible for most use cases. And for the rest it seems some hacky solutions are possible.

Of course the waste of switching from ICEs to non-ICEs will be incredible. But well, hard to see any alternative..