I might get flame for this but. Social credit system might be a way for us to get rid of money and achieve a classless, money less society. People can work hard and get a good social credit score. With a good social credit score, the benefit will be free housing, free healthcare and free food, water and electricity… etc. If you have a low social credit score, you can always improve by being a better person and contribute.
Vanguard party I would trust with quite a lot, but this could be taken advantage of by reactionaries and revisionists. To this extent, I would not trust a people’s party with this amount of authority. Its a good Idea, but I would prefer either different methods that are less widespread, or this in a very very far future (even then probably no). We can have other less surveillance state sort of ways to advance to communism. I would be fine with them testing it and using it in special cases, but you can see my hesitance to adopt an actual social credit system.