“The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.” - Bertrand Russell

Yes, perhaps this pattern of behavior is to be expected from someone who's staked out such an uncompromising position and stuck to it for ~30 years.

But it's also really sad that, in acting this way, he undermines his own goals.