Agreed, I still think that the problem is in the name because of that word “Progression”. An analogy of how they work would be the relationship between the engine revs and the gearing in a manual transmission car: The engine revs (PLs) rise until they get to the rev limit, then the driver changes gear (FTP) and the revs drop only to rise again. All the while the car is travelling faster.
But (some) people are just looking at the values and thinking that they must always increase because, because, well more is better right?
Replace “Progression” with Ability/Functional/Relative/Achievable or some other adjective that doesn’t imply that the Level must always increase.