All I know is that Castro later apologized to the LGBT community. Took him a long, long time to come around and understand that LGBT people aren’t bourgeoisie (HOW IS A PERSON’S GENDER/SEXUAL IDENTITY LINKED TO THEM BEING A REVOLUTIONARY/BOUGIE ANYWAY?!), but yeah.
I tried to find a source for that Allende ‘quote’ and I found nothing of relevance on Google Books. Then I did a general search (through Sagasu) and it’s very telling how almost every single result there is a Reddit thread.
Speaking of which, here are some responses to the image.