Maybe it's a legitimate area of research. But I hear frequently obvious bullshit claims from these researchers, like that they want to build a quantum internet.

Maybe it's a legitimate area of research. But I hear frequently obvious bullshit claims from these researchers, like that they want to build a quantum internet. And I don't see how quantum key distribution solves any problem. It's kinda circular - it requires an existing authenticated channel to work, which needs math-based crypto. At the same time the whole field is built on the claim that they're needed because they don't trust math-based crypto.