Also check out the podcast 2 before last in which coach Chad explains that the anaerobic/VO2 max power targets should be manipulated based on what you can actually get through within a margin of 5%, since the percentage is different for each person and is not a hard percentage above ftp.
So you could have the correct ftp but still currently not be able to finish those workouts above Threshold, in build. So lower the percentage for a few. It’s better to lower within the margin and complete than stop early.