Additionally, what in the world does it have to do with the OP?
Bloomberg is a relatively moderate news source with a strong track record.
It is relevant to the OP because it gives an idea of how reliable other articles from the same source might be.
> with a strong track record.
This is what they are disputing.
The burden is on Bloomberg to provide evidence. They didn’t mention this as a rumor or opinion but acted as if they have evidence proving their statements.
In fact, the person they used for their article later said that he was misquoted and even he didn’t believe it is the case: (Source: https://risky.biz/RB517_feature/)
Nobody found any evidence in any actual shipping hardware to prove any thing that Bloomberg has said.
As the result, nobody should trust anything Bloomberg says because they are basically making stuff up with no actual proof.
There was a lot of fear I gearing about what might be possible, no evidence of it actually being done.
A more terrifying possibility than “Bloomberg made it all up” is that the hack is so big and deep that anyone with access to the evidence is already on the take and deliberately hiding it.
There has been zero corroborating evidence found for the article. Bloomberg themselves has offered no corroboration either. At this point it's safe to assume it's false. Beyond that, it's like asking: "prove that the Sasquatch doesn't exist".