I believe that unless you‘re trans (or somewhere on the trans umbrella) there’s not really a need for coming out. To elaborate: Imagine I visit my uncle Albert. I see uncle Albert, I walk up to him, and I say „hello uncle Albert, I’m bi“. What is he supposed to do with this information? How is he supposed to react? All that will happen is probably that he’ll be confused af. Therefore I only come out to people when the moment demands it.