Did You Know Movies?
Two characters sharing a socially-condemned secret is a common storytelling trope that predates as much as the idea of LGBT people being acceptable by centuries
Jokes aside, it's great to see yourself in stories or even alter them to fit your tastes and experiences better, but don't deny it when people who worked to bring those stories to life say that wasn't the intent - or in the case of Luca, the literal opposite.
Two characters sharing a socially-condemned secret is a common storytelling trope that predates as much as the idea of LGBT people being acceptable by centuries