Not everyone in the LGBTQ+ community feels the need to be open about who we are, to make a social media declaration, or even wants to put a label on our identity.
The term "coming out" isn't for everyone. It reinforces the default of cisgender and heterosexual, as though people are assumed to be that unless we are "revealed" to be otherwise. It also implies there is something secret and shameful about who we are. Some people prefer to say "being open" about our identity.
For many, many people it is not safe to do so. It can lead to loss of relationships, employment, financial and housing stability, legal standing, access to basic care and services, social support, safety, and loss of life.
However, many people find a greater sense of freedom and congruence when we are open about who we are. It makes a big difference when we are accepted, respected, and literally allowed to go on about our daily lives.