WHBM, ZFT, strake and others - I asked for evidence and you have supplied it - anecdotal maybe, but that's often as good as it gets on PPRuNe.
It is instinctive to try and support others in the same job, but at the same time I'm not going to attempt to defend others doing the job badly - it depresses me, and I like to hope that I wouldn't allow such behaviour on a flight that I was responsible for.