That’s correct. This is a workout designed to keep you at high percentages of VO2max for as long as possible.
VO2max is not a power, it is a physiological state. Power at VO2max is the power that you can hold for approximately 6 minutes and is typically the minimum power that will illicit VO2max. All powers above that will illicit V02max until you get to efforts that are so hard and short that you’re body can’t catch up and require the maximum oxygen uptake - that is your maximum VO2max power. That range is very wide.
These particular types of workouts are designed to keep you at high percentages of your maximum oxygen uptake by operating at a power higher that power at VO2max with short breaks, taking benefit from the breaks for your muscles so that you can go on longer, combined with the fact that your oxygen uptake doesn’t drop very much during the break.
To me the workout is incorrectly labelled as Anaerobic.
Mike