Honestly I kinda hate the trend of advertising a comics "Lgbt+-ness" for several reasons.
The first, and most prominent, being that it's fetishistic. Straight and simple, unless the comic is completely focused on lgbt+ issues, it's just taking advantage of "diversity points", or advertising that it caters to a specific type of story that, in the case of BL, is pretty much never an accurate or even unoffensive representation of a gay relationship. BL's are know to contain rape, abuse, heteronormative bullshit, and so many offensive gay stereotypes I'm not sure where to even begin, and by slapping that label on your work you're associating yourself with that, plain and simple.
The second issue is the simple fact that it treats lgbt+ people as something "other". It makes it more "normal" to specifically label shit as if a fantasy action about a gay hero is much different from one about a straight hero. It treats lgbt+ people as if they aren't really people, but just living embodiment's of this one aspect of a humans being. It takes a well developed character and turns them into "that gay dude". We should be trying to normalize the passive inclusion of diversity in everyday works, not making it stand out all the more. I mean, you wouldn't mark your comic "black people" because your main character is black, would you?
And to the people concerned about the delicate sensibilities of others being offended by surprise gays or really any lgbt+ people, NO. People can put on their big boy pants and get over their homophobic and transphobic shit.