I don't see why. Technical debt is just a measure of how much crap there is in the code. It doesn't preclude having a discussion about how much that is to do with skills and how much that is to do with pressure/time constraints/existing technical debt.
The point of the dial is just to make the trade off between quality and speed that individual developers are making every day both explicit and management's responsibility.
It means if the dial is turned up to 100% management have no excuse for asking the question "why is our product a pile of crap?". It means also if the dial was at 60% for a year and a half the developers have no excuse for why the product is still riddled in technical debt, meaning that skills problems are distinguished from time constraints and managerial pressure comes with a cost attached.