My point is the following:
1. Government have certain “norms”. Monogamy, large alimony, lifetime commitment, exclusivity, that’s encoded in marriage.
2. Government claim that they don’t force their norms. You can always choose not to get married.
3. However, government recognize marriage and treat it differently than many other relationship.
You can’t have it both way. If you don’t force others to embrace certain life style you must not treat different lifestyles differently. If you treat different lifestyles differently then you are pressuring/forcing.