I don't think there's any kind of issue with being fashionable to be honest. Other than the fact that fashion does tend to be designed for a specific kind of person. If you don't fit within the body dimensions, age, etc that it was designed for, probably not good.
But yeah, wearing something that makes you feel good because it makes you look good? Nothing wrong with that at all. It's when people wear fashion because it's got a name on it and don't seem to look in the mirror and think "I look like a twat".
I've never done it with "fashion", but I know the positive feeling of looking good within a smaller group style. Even when I dress for comfort (most of the time), I try to look minimally presentable (theme parks are an exception, that's comfort/practicality all the way
).
So no, no fashion for me, but I don't have an issue with it as long as people actually look at themselves before putting on something clearly designed for somebody completely physically different