You are correct. It’s just with this particular Pope, one never knows. It was he who happily accepted that Hammer & Sickle Cross “gift” from Bolivian President Evo Morales in July of 2015.
Well, who knows if an ulterior motive is at play.
Terrible things have been reported about the Church, no doubt about it, and sometimes the pope makes seemingly ambiguous statements.
About the rainbow, though... Just reminiscing about the old days, before the word “rainbow” was co-opted.