To say what my editorial "may have" done, or motivated people to do or not to do, is pure speculation. Anyone can speculate about anything written or said.
And if there are people who won't attend events because they feel they are "fixed" -- which is not what I wrote -- speaks more to a problem with the events themselves than what I wrote about them. NNLs aren't even supposed to be competitive, yet it's the competition that is messing them up.
As for show coverage: I try to provide a representative view of what is on the tables at each show I attend -- a sort of Whitman's Sampler approach -- for those who were not present.
Having a model photographed is a big, big deal to many modelers. Having an image published is even more of a big deal. It's a point of pride, and in some ways a validation of their building skill. So yes, in most cases I go for the "best" models, at least in terms of build quality. There are exceptions, but generally, a model with paint or foil issues, a wobbly stance, etc. will not make the cut.
One of the main reasons for show coverage, in the magazine and in Contest Cars, is for the inspiration it provides. Seeing good models motivates and inspires other projects. People are not motivated by "average" models; they also won't buy magazines that show ordinary/average builds. Nor should they!