I have seen some maoists share this link in a spanish speaking server from the RCP. This article talks horrible things about Cuba -> https://comunaroja.wordpress.com/wp-content/uploads/2022/11/cuba-se-evapora-un-mito.pdf
After investigating it some of it here ->
It seems that the party was full of feds.
Found more stuff ->
https://www.counterpunch.org/2020/08/13/the-rcp-fascism-and-chairman-bobs-endorsement-of-biden-for-president/
https://www.marxists.org/history/erol/ncm-5/call-avakian.htm