the second fallacy is the "slippery slope" as in "if you start increasing the block size it will never end" which was used to stop scaling bitcoin on-chain to the point it comfortably could without losing it's decentralization properties. but that's how humans are in real life.
alternatively maximizing for eligible devices that could in theory run a bitcoin node instead of number of self-sovereign users that hold their own keys is just an insane and frankly suicidal move. because people who are priced out from participating the network as first class citizens will not run a full node anyhow.
