I just don't like that label. Just call it glam or something else. KISS existed before x japan after all. I think western bands can do something similar but they might not be able to pull off an exact replica. Not unless you're a talented femboy from Sweden who can speak and write Japanese. Forming a visual kei band is difficult enough on it's own. Throw learning to sing an entirely different language on top of that and it just becomes that much harder. And then there's Production, Makeup, Costumes, etc. All of this work to try and appeal to a small niche of people who'd probably rather just listen to Japanese visual kei anyway.
I'll also chime in with something a little more controversial. White people just don't typically look good in visual kei style. It took me a long time to accept that reality and it sucks I know. We age like shit and our noses are too big. Although girls can usually pull it off a lot better than us guys can. I've mostly given up the fantasy of being in a visual kei band now. I'll always be a fan though because it's shaped my whole life.