1/ An aside: @VP says "In the words of that program’s official blueprint, it will “allow the trustworthy to roam everywhere under heaven, while making it hard for the discredited to take a single step.”" Only it doesn't. chinalawtranslate.com/socialcreditsy…
2/ Assumedly it refers to "守信者畅行天下失信者寸步难行" a phrase that appears in some social credit discussion and invokes a classic phrase '诚信者，天下之结也' meaning that integrity/creditworthiness can solve all problems in the world.
3/ The planning outline does have a similar sentiment '使守信者处处受益、失信者寸步难行。[making it so that the trustworthy benefit at every turn and the untrustworthy can't move an inch.] but that sounds less exotic than 'roam freely under heaven.'
4/ there is no need btw, to translate 天下 (literally under the sky) as 'under heaven'， it generally means 'the world'. 畅行 needn't be 'roam freely' unless the trustworthy are buffalo.
5/ I don't think this is a big issue; there's much bigger in the speech. I think it does tell us something about where @VP AND his researchers get their information and why it matters when mainstream media and academics spout nonsense.
6/ Also, "And by 2020, China’s rulers aim to implement an Orwellian system premised on controlling virtually every facet of human life — the so-called “Social Credit Score.”" is a sentence that gets more wrong with each word. chinalawtranslate.com/seeing-chinese…
