> Betting that the market reverts to 'rational' pricing in any short time frame is a risky bet, but I'll claim it's much, much more reasonable than assuming that irrationality persists indefinitely.

Rational pricing requires perfect knowledge of future income streams. Unless you have such knowledge, you can't even know what concrete position reflects a bet that the market "reverts" (a misnomer, because it assumes that rationality is a normal state that is only in exceptional circumstances deviated from) to rational pricing.