P2Pool mining requires users to run a node. The bigger the fee market, the more incentive there is to run node/miner.

Centralization is arguably a bigger issue in Bitcoin. Mining centralization is more dangerous than node centralization. Chepear to fight centralization buying hard drives than ASICs.

I don't care about p2p cash. I care about censorship resistance. The last few weeks have proven that privacy is necessary for such goal.