Not OP, but as someone who was at one point excited by the potential of crypto, the ecosystem has moved more and more towards what it claimed to stand against initially
It’s supposed to be decentralized, but things like mining pools have lead to heavy amounts of centralization in block production. If we look at Bitcoin, for an example, we see that over 51% of block production is controlled by just two mining pools. That’s not limited to just Proof of Work mining either. Proof of stake sees centralization in staking pools as well. That’s only just looking at one aspect of the network
It has also not really been seen as a currency. People’s view of it as an “investment” which have the opposite qualities you really want to see. People are encouraged to hold it and never let go, meaning they won’t want to spend it which is adverse to its use as a currency. This has also lead to it being incorporated and dominated by the very financial systems it was initially supposed to move away from
I don’t want to type out an essay, but I could keep going on in other ways that’s not really lived up to its promises.