He is one of the authors of the BIP proposal but there are five more. So they all agree on those points in Phase B.

I don't know what to think. It feels like choosing between two evils, hoping you picked the lesser one. Allow satoshi-era coins to be stolen if a strong-enough quantum computer becomes a reality. That would cause a devastating affect on the network. The alternative looks even worse: freeze the coins and effectively take them out of circulation for the greater good of the network and again destroying trust in Bitcoin and censoring it.