Vitaliks games aren't amusing. A blockchain has fundamental limitations that prevent PoS from working, namely it must be costly to make a fork[1]. Complexity is the enemy of security.
Bitcoin solved the consensus problem with it's relatively simple incentive scheme. This post starts off by proposing a flawed system, making slight changes to the flawed system (punish attackers, trust someone when downloading the chain, assume economic incentives will cause people to update their software after an attack, etc) and recursively point out ways to "fix" those problems while at the same time either introducing more subproblems or more centralization.
This is similar to what is being done with Ethereum. Instead of one clear problem, there are many small unclear problems caused by trying to fix problems caused by a fix of a fix of a fix of the fundamental problem.
In short, this is Vitaliks Fractal.