I'm homophobic I guess

I had this crazy encounter with someone I just met. They looked like a guy, dressed like a guy, and had a super deep voice. I even complimented their outfit, saying "Hey man, where did you get that outfit?" and later told my friend how awesome "he" looked. Next thing I knew, they're accusing me of being homophobic for not asking about their pronouns first. I tried to explain that I assumed because they looked like a dude, but things quickly turned into a whole argument about pronouns and stuff. It got even more heated when they started implying that using "man" was offensive. It got me thinking - do pronouns really matter that much? LIKE WHAT SHE/HER DO TO YOURSELF IF YOUR TOO CONSCIOUS YOU HAVE A DICK oh + he look like homophobic because he's embarassing gay person on the way he act