And until the power and supply chain issues for running crypto are fixed, it's a pipe dream.
They will not be fixed. They are inherently built into the system and core requirement for such to work at all.
The whole bitcoin style blockchain thing is based on "voting".
First you solve a hard to compute problem, then you can add new block to the chain which can contain whatever you want, as long as it follows the rules of the blockchain. No rule obliges you for example to add all new transactions into the chain. You could leave them out, this would halt the transactions and bitcoin as a currency would not work. Even in normal rule-obliging operation you could diverge the blockchain into two separate "histories". To prevent this, the longest blockchain is chosen as a "master" blockchain. And the "master" blockchain will obey the rules, based on the fact that most people (much more than 51%) doing the computing will add "proper" blocks, so eventually with quite high probability, the longest chain will be one with most "proper" blocks being contributed to it and transactions work with no problems.
This is why its called de-centralized, there is no one person or institution who decides which transactions should be added, which not, or one guy who chooses which version of the chain is the master chain.
Now this whole thing is because it is very difficult to compute those hard problems. So one person cannot easily get majority of computing power in the blockchain. Because if he would, he could just prevent all or some part of transactions which would ruin bitcoin as a currency.
So now if it was easier to "mine" bitcoin, say you would consume much less electricity and need a lot less hardware to do it, somebody could easily purchase enough computers to take more than 51% of the chain and then prevent the normal operation making it completely useless.
For bitcoin or any cryptocurrency to remain truly de-centralized, only way is to use fuck-ton of electricity and fuck-ton of hardware to maintain it!
You could in theory change the "Voting ticket" to be something else than hard to compute problem. I think some suggestions have been to base voting power on how many coins you have, but that doesn't sound very good to me giving all the power to the rich
I think there are also some that instead of doing intensive computing do intensive I/O requiring a lot of HDD, but that won't really change the issue because you still need electricity and hardware for that.
Of course you could have some really trusted people or institutions chosen as oracles who will do the handling of transactions with low electricity costs and high reliability, oh or wait we have banks for that already.