OK, so there is a difference between "coming out" and "living out".
"Coming out" is when you reveal to your family, friends, co-workers, etc. that you are LGBTQ+. For some, this is a big deal, for others, less so. It largely depends on your family of origin, and how "closeted" you lived before...
"Living out" is when you live in a manner and lifestyle that doesn't seek to hide your sexuality. You invite your same-sex partner to your company picnics, you discuss your latest same-sex person-of-interest with your family, friends, etc.
For some, "living out" from an early age erases the need for "coming out".... For others, they maintain "separate" lives: a life where people do NOT know their sexuality, and a separate life where they DO... and the people in each "life" are carefully separated... this is "life in the closet", and we generally know that it is unhealthy... But, lest you judge anyone: in some cultures/countries LGBTQ+ is still illegal (even under penalty of DEATH!)
We each must blaze our own path...