if by "gay" you mean slightly homoerotic showmanship, sassiness, a love for unicorns, the destruction of cupcakes, and ray's girly ass voice \ gerard's giggle, then yes. MCR are gay.
If you mean that they are "stupid", you are using that word incorrectly, as the term gay either refers to 1) something bright and happy and colorful or 2) homosexuals.
And in defence of my fellow homosexuals, and in defence of my chemical romance, here's a big FUCK YOU. -I-_ O_O _-I-
--E