The author suggests proof of space as an interesting option but then deliberately avoids commenting on Chia’s implementation of proof of space time. Can someone

The author suggests proof of space as an interesting option but then deliberately avoids commenting on Chia’s implementation of proof of space time. Can someone explain that to me? Is it the pre-mine that drives people away? If so there is already a fork (Flax) with a much smaller pre-mine that is surely worthy of assessment and scrutiny at an algorithmic/system level... Or is the author simply acknowledging they aren't ready or qualified to comment on PoST versions of Nakamoto consensus?