LGBT authors?

Over the year’s I’ve read plenty of transgender and crossdressing fiction both online and published novels.

While much of the online content is seemingly written to titillate the author, which is understandable, published novels usually seem to be mostly intended to be realistic fiction.
With real life experience of the subject I often find novels trying to present lgbt characters insulting. The characters fall down because the author seems to have included at least one (and often one of each) lgbt character solely to widen the novels appeal to make it more stylish. Said author then fails miserably as they have no understanding of what it is really feels like from the inside.
Perfect example of author jumping on lgbt bandwagon must be emma straub’s ‘all adults here’
Grrrrr...