I do not care who you take into your bed at night, so long as they wish to be there. Disliking glitter has nothing to do with sexual preference.
Glam rock was simply an easy example of an over-use of glitter. Perhaps it would have been easier on your sensibilities should I have gone with a peacock's tail feather or something? But it is more iridescent than 'glittery' so it is a less perfect example.