Ethereum has actually done a remarkably good job protecting the Zero Option at the infrastructure level.

I would disagree slightly here. Yes, if you are willing to spend a significant amount of time and money to use this technical infrastructure, then yes the Zero option exists. At the same time, I want to see Chaskin run multiple L2 nodes and transfer money across badly documented bridge contracts and whatever. Then suddenly the infrastructure Zero Option also doesn't look that pragmatic anymore