eyebeams said:
In the specific case of Gamma World, what might be asked is whether a writer should follow fans' notions about what Setting X was regardless of whether those notions match reality. IN GW's case, I don't think they do.
As I don't know enough about the recent GW, I can't comment. I didn't buy it.

I do take your point that what is "canon" may be open to extremely wide interpretation.
eyebeams said:
BOS is a pretty enough term, but it's really just a manifestation of pointless consumerism. And it's *bad* for gaming. Publishers like it as a kind of economic junk food, and if you want a better hobby, you have to wean them off it.
It is a manifestation of being a fan, of following "dem bums." Much like baseball. I take your point that publishers can see this as an opportunity to bring other than their A game but smart publishers will not do so for reasons you identify - TSR.
eyebeams said:
As soon as sales are divorced from content, content goes downhill. The guaranteed sales base of people who will buy anything labelled as a must-have is smaller than you might think.
It is *much* better to encourage companies to push the envelope of quality by buying cautiously.
I agree that sales divorced from content is not generally good. It is, however, sometimes inevitable for the fan.
I agree as well that buying cautiously is also a good thing in most cases. BOS products do exist, however, especially for fans of a particular setting.
I think it is a matter of proportion. When possible, limit your personal BOS list. It is not possible, I think, for a fan to totally do so but one can try.
In no event, however, does a purchaser _ever_ give up the right to be critical of what they bought, however.