Networks trend towards more decentralization or more centralization. The decisions made early on in Bitcoin, like the block size limit and 10 minute block times, are what help it trend towards decentralization. Ethereum's faster block times, unbounded block size (I say this because the devs and miners can increase this arbitrarily) are what force it to trend towards centralization. Even without PoS, Ethereum will eventually run into the problem of no one being able to run a node unless you can make a business out of it, which is what Infura does. Looking at BSC is like viewing Ethereum at 10x speed, where it's already impossible to run a full node for the average person, not that it provides them any benefits anyway.

There really isn't much weight behind the archival node's storage problem. In Ethereum, an archival node can be created out of a full node using its own data. An archive node isn't necessary for the average user, since a full node performs all the same full validation as well, it just doesn't store the extra bloat created in transactions, only the result. The real problem is the block size, which in ETH's space is the gas limit. Miners can increase this on their own, as long as they don't increase it by more than something like 1% per block. This is laughably bad for users because it makes it harder to run a full node, contributing further to the centralizing effect.