Good notes all round, guys. It’s been hinted at in every movie after ANH, so fine to expand on it in the finale without needing Leia Poppins.
As a side note, I doubt that the Leia knowing it was Luke in ESB was originally intended to be her being force sensitive, since she only became his sister (and also the ‘there is another’) in one of the drafts of ROTJ, but retroactively it totally works.