well not sure what this proves, but I guess you can bet against the ethereum developers delivering. I'm personally not making that bet, but if you want to do so, that's your view of the world lol.
The solution you have come to is a fair one (which is that truly developing a decentralized infrastructure that is reasonably priced to run apps on has too many challenges to succeed, at least the current solution that ethereum is providing).
I have hope that these problems can be surmounted by the ethereum development team. There are lots of challenges, and that is why everyone says we are at the beginning stages.
I think it's worth a shot, and if it succeeds I do believe we'd live in a better society.
Im particularly fond of Hyperledger Fabric, though it is quite antithetical to the crypto narrative.