This should also be expanded to include non-hetero men as well -- there's already enough literature on heteronormativity that I don't feel obligated to go into too much detail (and it is also very late so I don't want to), but it should be sufficient to say that heteronormativity and cisnormativity are major reinforcing factors for patriarchy, and that therefore homophobia and transphobia are inseparably linked to patriarchy. The oppressions experienced by cis gay men are certainly going to be different than those experienced by non-cis men, but there should still be a fair amount in common, and a large amount that cishet men do not experience.