I think Steven Universe and She-Ra demonstrate how LGBTQ-inclusive writing can improve the development of platonic relationships on screen. In just about any other screenplay Steven/Lars and Adora/Glimmer would involve some form of nohomo signaling. We'd either get arbitrary boundaries on emotional intimacy or side-ships to say that these people are really straight.
Instead, both of those relationships can involve emotionally intimate conflicts, and we know it's not subtext or coding because they're different from Pearl/Rose or Adora making googly eyes at women with big biceps.
When it's clear that LGBTQ people will be treated by your story with honesty and authenticity, we can read your platonic friendships as frank and authentic as well, rather than playing a guessing game with your subtext.