I have some friends who've done blockchain consulting work for a few years. I've found myself hanging out with them at a lot of blockchain events. I ask those annoying questions a lot, like "why" and "Isn't this just a badly implemented, unscalable mostly centralized system with weak governance?".
Its usually fun (for me) but I never get any good answers. It feels like arguing about the existence of god with believers. My working theory is that young technologists get into blockchain because it seems cool, and its something bigger than themselves to care about. Before long they have lots of friends who are believers too, and asking hard technical questions feels like a threat to their community. So they don't ask, and instead spend years working on technology thats an obvious dead end. (Which isn't to say everything in the field is useless; but about 90% of it almost certainly is.)
The irony is that quite a few of these systems could potentially be revolutionary if they were willing to give up enough control. Many of them are centralised because they think it's the best way of making money of it, even though it's compromising their original technical vision and making their use of blockchain meaningless. I think quite a few of those will be crushed when someone dare create decentralised versions of their original idea and they can't respond.
I think we will see some fantastic uses of blockchain eventually, but I worry a very substantial proportion of the people pitching blockchain based ideas today don't even understand that they're missing the point themselves or know they've compromised everything but don't dare pitch the uncompromising decentralised vision.
Its usually fun (for me) but I never get any good answers. It feels like arguing about the existence of god with believers. My working theory is that young technologists get into blockchain because it seems cool, and its something bigger than themselves to care about. Before long they have lots of friends who are believers too, and asking hard technical questions feels like a threat to their community. So they don't ask, and instead spend years working on technology thats an obvious dead end. (Which isn't to say everything in the field is useless; but about 90% of it almost certainly is.)