The left, through history, has not changed much at all.
I have been warning about these various communist organizations and the movement in general on here and elsewhere for nearly 25 years. Most go directly back to the 60s and 70s. When I began doing it here years ago, there were actually people who accused me of exaggerating or even being “paranoid”. They were upset at me for using the then-dreaded “C-word” to describe what these groups and the movement were really about.