It's Simpler and Fairer. Didn't you get the memo?

At the end of the day, the choices are to live with QF's Byzantine system, or to go to another airline whose scheme is easier to understand. If you choose the former, you'll need to find ways of finding out in advance what the booking class is for each sector if you don't want to be subject to this lottery. Provoking meaningful change in QFFF is insufficiently likely to get worked up about.