A point well made.
There is no such thing as a "good" or "bad" mod (well, save those few shoddily made mods that actually do cause legitimate problems in your game, but let's exclude those), what makes a mod "good" or "bad" is entirely a state of opinion.
For example: the mod I am working on right now, I would consider it a "good" mod (though I am a bit biased

). But many of my friends who I actively converse with about projects and other stuff are actually outside of the target audience for this mod. But does that make the mod "bad?" No, and they understand that.
It's the exact same way as these manga mods. They have a certain target audience. But because you are not a part of that audience does NOT automatically make the mod bad. It does mean there might be a few issues with the community at large if those are the biggest mods, but can you really blame someone for wanting to ride the wave?
The only mods that I would consider bad are those that are a confirmed source of crashes or save corruption. And that is a lot different from what I described above, as that reason is technical; a much more black-and-white picture than target audience.
Long story short: you do not get to dismiss someone else's work because you don't like the subject matter. I don't care what mod it is, every time this done, a wedge gets driven further into the community. Do I approve of sixy/manga/doe-eyed-race mods? No. Does that make them bad mods, then? No. It just makes them mods I won't download. That doesn't mean I do not respect the author for taking the time to make a FREE add-on for a game as loved as this one.
Yes, the community isn't exactly the definition of good taste, but that does not ever permit you to use another modder's work as a lightning rod, especially since you aren't paying a dime for it. We desire constructive criticism. Hateful comments chastising what we do because you don't approve of the subject matter will only get you as far as our ignore list.