I have a fairly diverse cast but I like diversity. As a character designer, I get bored if all my characters are white or blonde, etc. I don't really do it to make a point, and since I don't make a big deal of it most people don't realize I have a mixed race cast. In fact, a girl once told me "it's okay that all your characters are white" while pointing at an illustration featuring 2 characters, one Asian and one South American. But in the comic their identities are still largely a mystery, so I don't promote the comic as being diverse or having a lead character who is not white. I draw in anime style, though, so they have blue and purple hair and I guess that confuses things, too.
I get a little frustrated when I see comics doing the diversity checklist thing. I don't say anything when I see it, either. I also get frustrated when I see a comic with ZERO diversity, but again I don't really say anything, since in both cases it is the author's story, their vision, and who am I to judge. I'm pretty used to reading comics without diversity (I read a lot of manga, which is mostly Japanese characters) and the only time the diversity thing bugs me in this case is when the author has a chance to include dark-skinned characters and doesn't. One story I read, Magi, has a character who is obviously from this fictional world's equivalent to Africa and her skin is very light. I say it bothers me, but really it's more of a "Eh, that's too bad, it would have been cool if she looked more African". The Egyptian styled characters, though, are tan skinned, so it's kind of curious why the author didn't do the same for the African-styled girl.
It's a touchy subject! I've been called racist for supporting non-diverse media, and I've been called anti-white for supporting diversity. I'm in the middle... I don't see diversity as bad, I think diversity is normal and it's weird if an American movie or TV series is all-white in this day and age. But I also don't get the pitchforks and torches ready when I don't see diversity.
I only have one character whose race is immediately going to be an issue, and I'm really nervous about those chapters since it is so hard these days to not offend someone... but it's something I've been wanting to do and I'm going to go ahead and do it, and if people don't like it, well, I guess I'll hear about it. But I'll probably not change a thing because it's my story, my vision, my characters, and my choice.