I'm going to tell my kids that pretty much all their Aunts and u cles are gay but don't ask them about it because they haven't come out yet.
That's hilarious because I'm a real life example (sample size of one) how your master plan actually works.
My Mom's sister and brother were gay (both have since passed). Pretty early on my sister and I figured it out. They each had a couple of different very long-term "roommates" over the years when they seemingly didn't at all need to have roommates at 30-40-50 years of age. And the "roommates" were always in attendance at family events, high holidays, etc. They were totally treated as family and as extra aunts and uncles to us.
When we finally asked my Mom about it, she literally explained the same thing, "They are gay, which is totally fine with all of us, their partners are part of the family, but they haven't come out yet to all of us, well, because some family members may be uncomfortable with it and your Aunt and Uncle probably think you might be uncomfortable with it too...." That last part kinda broke my heart.
As an ultimate result, at a relatively young age, in a smallish town where homophobia wasn't rampant, but being gay was certainly not OK, I was totally cool with it. Had some very closeted gay friends that came out to me in high school, but to no one else. That kind of thing.
All because two of my favorite people on the planet, my Aunt and Uncle, were gay and it taught me that with whom you adore, sleep with, partner with, is just as fabulous, laudable, cherished, and celebrated as the man-woman construct is. No difference.