I think we all agree that Gable lost the mental matchup with Owings, especially he said so. However, the comparison here doesn't work.
If we are using that as a parallel, then Dake got inside Taylor's head and convinced him to become injured during practice. To me, this is absurd. What we have heard at this time is that he was hurt and couldn't finish practice with his own guys, not while wrestling Dake.
A match where this might be a more likely argument was Amuchastegui breaking Ruth mentally while also damaging his knee. While I disagree that Ruth stopped the match for mental reasons, the argument at least has some believability in that case. Not here.