Then don't come out and claim that FCEVs are a bad idea. If you know that they can work, then support them fully.
Imagine a world where wind supporter vigorously attack solar power. That would be insane! That's also what is happening now with FCEVs. It just happens that FCEVs, due to their lower resource needs, will play a much larger role than BEVs. But BEV fanatics cannot accept this at all. So rational people should know better than to swallow their lies.