That last sentence makes no sense whatsoever..
I will point out again that it doesn't matter to CRT what bit of the Macc that I choose to moor on (a bit like it doesn't matter where a CCer moors), or which farmer I pay for my mooring (or how much), I have to pay the same additional fee to CRT. It's not tied to a particular place at all - I paid the same when I moored on the Shroppie.
The difference, of course, is that it can be adjusted for circumstance, so if I wanted to hang about in a popular spot like London, the CRT fee would be higher. For a CCer, this isn't the case, they now get the same small surcharge everywhere. This is logical for the ones that move round the system, but for the majority that don't I suspect further changes may be in the pipeline.
The point is that everyone moors, but only some pay a fee to do so. That fee has nothing to do with the rent paid to the landlord.
The law was written to be fair to those who wanted to cruise the system. It wasn't intended to cope with those who wanted to stay in a small area for whatever valid reason. That's the trouble with the law, which is inflexible, and the society it controls, which can change rapidly. Luckiky, CRT have found a way round it, following the example of those who have, themselves, found a way round the intention of the law.