It’s not that they are too abstract it’s that they only hold in a fantastical alternate reality where the elite resign without a fight.

In reality, if cryptocurrency takes power from the elite they will make it illegal and arrest 95% of its users who are incapable of learning how to mask their network participation. This is not reassuring for an idea whose decentralized powers are predicated on mass adoption.

I'd argue the opposite-the benefits of decentralization are clear and concise.

edit: Central point of failures, ownership, privacy, etc etc.