Also, he wasn't punished for positing a heliocentric model, but rather for writing a book with a character named Simplicio(idiot in Latin) who parroted the same

Also, he wasn't punished for positing a heliocentric model, but rather for writing a book with a character named Simplicio(idiot in Latin) who parroted the same arguments against heliocentrism as the pope. This was taken as him calling the pope an idiot.