No not at all! I often see cosplay that I find very impressive. To me it is slightly at odds with the concept of style as it relates to day-to-day clothes though. Which, it seems to me is to some extent defined by its practicality. High school teacher though ... I can see that - it's a profession where you can wear what you want and perhaps have a little more freedom than elsewhere to be creative. I wish I had taken the opportunity to do the same thing more often when I was employed as a magazine journalist. Another profession where you don't have "clients" or customers as such. Clients or customers might find this mode of dress a bit ostentatious (hence why lawyers/bankers wear very sober suits - they do not want to "outdress" their clients).I teach high school and wore this to work. I'm standing in my classroom in the pictures. I have the ability to wear what I like so I do. This outfit is not based on a character from a book, movie or video game so it's not cosplay. Given the sheer number of books, movies and video games in existence, I imagine almost every outfit you and I wear (formal, casual, or otherwise) could be paired with some character. Every outfit is cosplay. Do you take issue with cosplay?
To me, the most interesting elements of the concept of "style" is how it fits into the world we inhabit. Cosplay is obviously the antithesis of this - after all it's really just a contemporary term (derived from the Japanese I believe) for "fancy dress". It's very interesting, culturally, as a concept in its own right, but it isn't style, imo.