I'd like there to be the choice so people can use whichever they prefer. What we have now with doubling dice and applying traits such as fatal, deadly and so on works very well and is given as a GM choice in the same paragraph in the PF2 Core Rulebook on how to double or halve damage, so both options are as valid as the other.
But I would not be in favour of removing one method in order to replace it with the other. Hence my display of favour for the current implementation.
As Trenloe mentioned, he's got a lot of other work to do with ruleset updates so that we can move forward with releases such as Secrets of Magic or Guns & Gears and so on, which seems a better use of his limited time to this observer.