I’ll just leave this article here if you have a few minutes to read.
There are a number of sessions that we do not recommend erg mode due to the power demands or the “nature” of the efforts. Violator is a great example. The goal of that session is to go 100% all out on every effort. We have power targets set based on the “expected” decay rate of peak power, but everyone is different, and your own performance on that one can change from day to day.
I would highly recommend doing at least 30% of your SUF sessions in level mode so you can work on your own power finesse, a skill far too many people neglect these days!
All that being said, you are 100% correct that the text for that final sprint does not make sense for users in ERG mode, and thank you for bringing it to our attention!