He does say they marked up, but that too is a problem in his view.
See "TRSes & Digit — Overview".
"We feel it is incontrovertible that Digit is worth far less today than where Fairfax ultimately marked it in 2021, which is why we adjust Fairfax's book value down by $1.1 billion, as of December 2022,for Digit. While the ultimate valuation at which Fairfax marked Digit in 2021 may have been justified at the time (discussed infra), Fairfax, in our view improperly, recognized these gains in a manner inconsistent with valuation changes in Digit by first ignoring a gain that should have been taken before the TRSes were in place, and then spreading a one-time gain out over three quarters.. We believe the inconsistent recognition, rather, was designed to provide more fuel for Fairfax's share price, which as a result of the TRSes, was now feeding directly into Fairfax's net income. Through the TRSes, this fuel had a recursive effect on Fairfax's financials by inflating income as the stock went up, leading to more share price gains and more income."