Not disputing the concept of a social credit system being in the works. But, the examples noted in this piece don't really point in that direction. There's a huge difference between being banned on whatsapp for being a nuisance, and being denied the ability to step on an airplane because of your political views and sympathies.
Then, making the additional step saying that it'll be used as an extrajudicial tool, in America, while terrifying, is pure conjecture. Again, even if all of the examples were proof of something, there's no evidence at all that any of it is tied together.
Now if we could prove that you can't get a room on Airbnb because you spread nazi propaganda on Whatsapp, or that it's all tied into your social media and financial history, that's an entirely different thing.
We're just not there.