bjcc
If you read the report, you'll see there was lots of independent evidence that the Captain in that incident wasn't merely over the legal lmit but was indeed as described by 16B.
That doesn't apply to the other cases that have been discussed here.
I don't understand your 'castigation' point. As far as I recall, in only two cases discussed here was it said that the pilots hadn't been drinking.
In one case, the pilot who tested positive denied he'd been drinking and said his drink had been spiked following a dispute at the hotel.
In that Manchester nonsense where some PC saw fit to breath-test both pilots after a passenger complained about a 'hard landing', both pilots tested negative.