That recent essay went over this, the fact that if you freeze property rights in their current state you may be condoning stolen property, yet Libertarians typically shrink from a large-scale one-off redistribution that would cancel out earlier thefts and allow everyone to start fresh.
Ultimately much of the Libertarian concept is based on an aesthetic of a small landholding being worked by a rugged freeman mixing his labour with the soil (but like, not in a kinky way).
In practice this falls apart: the rugged freeman is either standing over the body of the guy he just killed to take the land in the New World or is bound by a complex web of mutual obligations and tradition and common law in the Old World, both of which are far removed from Libertarian paradise.
The world is already ludicrously morally impure on property terms, so why not abandon the purity of property in favor of something that values peoples’ wellbeing instead?