The so-called "don't say gay" law doesn't actually restrict LGBTQ teachers from talking about their gay partners in informal contexts: it bans them from teaching kids in a formal context about gender and sexuality (of any kind - heterosexual or homosexual) before a certain age and restricting it based on curriculum standards above that age.

The idea that the law restricts a male teacher from having a family photo or talking to students about what he did with his husband over vacation is completely false. That would be as illegal as preventing a teacher from praying with students in their off-time (after football games), which recently got re-affirmed by the supreme court. It only binds teachers' speech when they are operating in their official capacity as agents of the state.

While you might not agree with this particular restriction, agents of the state generally do not have free speech when they are acting in their official capacity. Teachers, DMV employees, and police officers all have lots of restrictions on their official speech. The ability of the people to restrict the speech of their agents is very important for maintaining a democracy. It keeps religion out of school curricula and it is what makes cops read you your rights when you are arrested.