Socialism

Sorry if this question seems inflammatory or uninformed, it comes from a place of simple curiosity.

While getting into socialist theory, partly through breadtube content, I often stumbled upon creators/commentators/writers who absolutely crucify the US (rightfully so in many regards), but either justify wrongdoings of the CCP/Russian regime or outright support them.

To me it seems absolutely incongruous to claim socialist ideals for oneself but to champion authoritarian regimes that have ties to Socialism merely semantically or through some spurious historical traditions.

Can you enlighten me about this? Thank you.