Bodybuilders typically 'water manipulate' in the final stages to achieve that 'shrink-wrapped' looked. I doubt that kk is anywhere near needing to do that. In fact, I can't think of anyone other than bodybuilders who need to do that. And Lyle McDonald is speaking to bodybuilders, among others.
FYI: I'm always either with visable abs or am within striking distance of visable abs. And I've never had to do anything fancy to lean out. Just cut calories.