I do believe it's a bit of an activist vibe to normalize LGBTQ+ to its audience. (Not in Sandman specifically, but like you say sort of all over the place.)
I don't mind a bit, but it does seem to be a thing.
I dont think its explicitly activist, just more who do you think is going in to writing, film, effects and theater? a disproportionate number of people who ARE, or have a social circle, that includes more of these people. the creators of this content will be disprotionally represented by certain groups due to the nature of the content, and that content is going to implictly represent their worldview
much like a lot of film and television and having pretty regular jewish characters but almost never mormon characters, despite both populations being roughly the same size in this country. like every comedy in the 2000's has had multiple jewish characters because at the time, a great number of excellent comics and comedic producers happen top be jewish, despite jewish people representing like 2% of population
there absolutely nothing even remotely wrong with it, film is not required to somehow clarify their casts based on the census


