A broader definition to suit a broader appeal so instead of raising the bar and bringing people up to it , authors are talking down to them on their level of appreciation so that will garner them more money and acceptance and favor.
I love Greg and Christopher as people, and great thinkers but I haven't read a whit of their work thus far so this is not a personal attack except maybe on the complicity of the publishers with the authors which seems to be too all convenient and comfortable these days is all. It is what it is because we say it is just doesn't wash with me. Hopefully there's some profit to it but that hardly interests me as a science fiction/Trek fan. The quality of an idea is what interests me, not how well it's written or if an author can deliver it on time and schedual. The movies are full of well written garbage. Not that an author is dispensable or disposable either but qualifications does not a great author make neither are they better than their work. In that sense it's not like a marriage, but more like big love where publishers should not only be fickle but feral as well.