The "investigative" part is public data that any of us can view. If there was something remarkable there, crypto bros would have found it without waiting for reuters to "review" things.
Obviously since binance is not based in the US or EU, its users don't expect the same level of transparency that banks have. If reuters wanted more transparency maybe it should ask some country to allow it to base itself there. But given that they have been effectively on the run for most of their existence, it's not strange that they are keeping their secrets to themselves. I think reuters is trying to be sensational but none of the news it reports are.