Yuval Noah Harari said something along the lines of "communism is a religion, but so is capitalism, and so is Google." Of course Harari is being a bit of a troll, but so is whomever wrote "Marxism is a cult of power" video. I find Harari's framework more useful than labeling any specific ideology as a "cult".
I agree the use of the word “cult” was perhaps stronger than necessary, and maybe even a bit trollish, however, I think James Lindsay’s analysis is still quite sound