I genuinely don't understand why this should be considered as part of a media conspiracy against BA. The FA's involved work for BA, and therefore made their employer part of the story when they chose to arrive at work in a condition that caused others to suspect that they were in contravention of the relevant regulations.
I'm sure that they are nice, well intentioned FA's who have made an error of judgement that they now bitterly regret: Unfortunately, they are now caught in the machinery, and they are likely to be torn apart as the cogs and wheels revolve automatically. One day, I could make the same mistake, and when caught, I too will have nobody to blame but myself: My employer will certainly have little sympathy for me, no matter what the previous standard of my work may have been.
I don't think this is really a BA issue - as captcat says, others have also been caught out on this. However, I sometimes wonder why it is that a disproportionate volume of crew affected appear to be of UK extraction? (also the U.S. but less pro-rata). I think that there is possibly a cultural problem here that has come into play. Of course, if Italians/Spaniards/French/Portuguese etc. FA's are experiencing the same problems, but we're just not reading about it in the UK, then I'm sure somebody will correct me?