Yes. 10% of the Enterprise crew, or any crew, or any sample population anywhere, is in fact LBGT and it simply is not remarkable enough to make a point of it because having long been accepted as normal it is no longer a political or social issue in the future of Star Trek.
Why make a point of it? Why not just include some gay characters - you know, like they've included straight characters.
I have no problem if any character happened to be gay, but I just don't think they need to go out of their way to make a point that a character is gay simply for the sake of including a gay character. I would be OK if they could somehow seamlessly include a line of dialogue or two that indicates a character is gay -- but the "seamlessly" part of it is difficult to pull off, but it can be done.
For example...Let's say a screenwriter originally writes a script that includes a male minor character who happens to make mention of his wife. If they then go back later and change that line to be "husband", then
that would be seamless.
I say that is seamless because the writers originally felt the need to include the line about that minor character's wife anyway, so changing the word to "husband" isn't forcing a gay character into the script for the sake of doing so; it's just changing a word.