I can really see it both ways. On one hand, members were promised a certain amount of updates with a certain frequency and while she's totally free to do what she wants with her career it is a little bit crappy for those who signed up at the beginning. However, anyone signing up or who has signed up since the reduction of output has no reason to ever have expected anything than what they're getting now.
I also think that, since so much of her stuff is available in other places (legal or otherwise), signing up for her site is really more about supporting her ongoing quest than it is about being granted access to material. I've always suspected - though I very well could be wrong - that a huge part of the desire to pay for a membership stems from the very nice idea that you are a part of her journey in some way, helping and encouraging her to go further. I can imagine that for every member of her site there is a sense of minor personal victory with each new upgrade or enhancement. I'm not placing any judgement on this, it's just a mindset that I've observed and can partially relate to.