IDK if hetero men refusing to wear fitted clothes is because of homophobia… Or that they actively refuse in the first place, its more likely a disinterest in spending the time or money on fashion in general. Most hetero men will only engage with fashion after they’ve hit the gym/got-fit because they think they have a chance with ladies after that so a thing they normally would ignore (fashion) is suddenly worth the effort for the extrinsic reward.