The larger point to be made vis a vis the dichotomy between CC and Perpetual license Lr is that it probably costs more and has more logistical issues to maintain Lr updates without the features of CC. That is to say, they are either keeping two different code bases which they are updating or the functionality updates (Dehaze, Guided Upright, etc) are locked/unlocked via the validation mechanism. In the first case, there are real costs involved and in the second case, they are just being pricks. In both cases, the point is to drive people to the subscription model.
Full Disclosure...I have the CC Photography Plan at a current rate of $7.99/month.