

The priority for me is any authoritarianism. Authoritarianism by itself is extremist; wanting a world liberated of that is not.
Surveillance capitalism, religious fundamentalism, it’s all the same to me: they seek to control people and the flow of good life standards, away from the masses, towards their leaders.
Surveillance capitalism does so by selling your private data to the highest bidder, and these will use it to spy on you, bribing, harassing, and corrupting lawmakers into creating a surveillance state - a perfect recipe for authoritarianism to pop its head up. They direct attention away from the oligarchs so that we do not combat them.
Religious fundamentalism sells your personhood to the strongest converters, to those that strip you of autonomy; such groups thus also spy on you. They always look for the downtrodden, weakest and most vulnerable, to direct their hatred for their current situation away from the true source – oligarchs.
So for me, I’d say there is no difference and this question is meaningless: it’s asking for the difference between a golden apple/window and a golden cross. At the end of day, both cannot be eaten, but all buy it up blindly.
I do not for a second trust the state to wither away when a vanguard party is in power. I’d rather skip that phase entirely before it can corrupt politicians.
Sure, gradual withering would be nice, and ideal; but is there any socialist state that ever actually turned communist? in that there’s no significant bureaucracy, no surveillance, where there’s no democratic centralism*, and where workplace democracy is everywhere?
* western parties also do this, called party whips.