> and do indeed get faster as hardware speeds up.

This is not actually true, it still has the same scaling bottlenecks with state access but they are expressed differently (via hidden tx finality slowdowns) since it does not have an effective fee market.

Solana also ignores that part of the core reasoning that you'd want to use blockchains is for their decentralization and your ability to independently verify them in their pursuit of being able to claim 4000 tx/s. You need a 10 gigabit network connection to run a full node.