It totally can be. You should avoid ubiquitous blanket statements, you’re bound to be wrong a fair percentage of the time. Judgement doesn’t look good on anyone. There are plenty of issues with the institution of marriage, especially since it’s been established with a hetero-centric point of view. I’m a gay woman, I’m fully aware of this, and we’ve made active choices to do things our way, not society’s, as do many other gay and straight couples. There is always nuance.