BBC should just release these docus whenever there's something off and a red flag that they've noticed for one specific personality and the service that it has been working with.
The fact that BBC is not a crypto-native media will make it harder for them to do documentaries before the incident (if any) that's why they do post-mortems. I doubt that they even have crypto focused researchers or engineer that will aid them in that regard.
Who knows but if they've started this one. I think that's the initiative from them and they are seeing that there's a lot of audience for them if the topic or docu is all about cryptocurrencies.
While with these controversies, it's not really all about dealing the crypto community but all about these cons like SBF that they're covering.
But maybe, this could give them the idea that they should start to investigate and get to know more into the crypto market to know more if anomalies like this are existing before they popped out.