In this case though the problem isn't irreversible transactions, it is that Craig Wright does not and has never owned the coins he claims to have owned.
This seems much easier to achieve and allows him to steal coins from all BSV holders without taking from any one BSV holder in particular. Coins previously thought lost would be reintroduced, effectively inflating the coin's supply.
That's a quick and easy ~ $83M based on today's BSV price and a conservative estimate of the number of coins held by satoshi.