It matters because their goal was hyping up how advanced and difficult their tech is, propping up their valuations.
DeepSeek proved the emperor had
no clothes and wiped out a lot of their valuation when investors saw reaching parity to Chtgpt is not really that difficult.
I think parent was asking would it even matter if there was a ban. To which the answer would be "no" because as you said the point has been made. And, as parent pointed out, it's repeatable anyway.