Muma

Visual kei gets a bad reputation because visual kei fans can't talk music
Elaboration is the cornerstone of great conversation and great writing. Talking about music and bands is an exercise in persuasive writing. You're giving your audience - anyone that took the time to read what you have to write - very good reasons to consider why your position is correct. Now let's say I just left this topic with that one sentence in bold. I may have a good point. If I explain, I very well may change your view. But since I don't, you won't take me seriously. If I do this over and over again very soon I'm going to build up a reputation as someone not worth listening to because I don't explain the "why's" behind my beliefs.
Expand this out to the entire visual kei scene.
One of our largest problems isn't that we don't have a lot to say about our favorite artists. We do. We just never get around to ever saying it. This extends out beyond Monochrome Heaven. I find I can't take people's opinions or reviews seriously because they'll just say something is great or something is shit and leave it at that. Most of the time I'm convinced that subsequent people just parrot the first person to say something different, and it continues in that direction from there. There is hardly ever details and when there is it is at the most basic level possible. As fans, we should continue to promote our favorite bands and our favorite releases, but then couple that with reasons. Why do I like this album? Why don't I like this band?
And let's keep it strictly about the music, because believe it or not saying "the vocals are good and the guitars are awesome!" tells a potential interested reader nothing. What exactly does awesome sound like? Right...
Now if you are not confident in your writing and explanation abilities, don't let it stop you. Read up on professional reviews on other websites. Take tips from them. Continue to work on it. You can't become better at reviewing if you never try. But if we all begin to discuss the actual music behind visual kei when we make our claims, I believe that people in other scenes will stop dismissing us outright as wankers who only listen for the pretty boys.