That is complete and utter bollocks, Neville. Are you suggesting it is now operational policy in "many airlines" to bust minima??? Are you serious? That would be one of the more weird things I've read here.
Please have a read of the comments regarding fluctuations of visibility in fog and see if this would explain what you are putting down as criminal negligence by PICs or airline management.
Well I can tell you that I have personally seen some foreign airlines, one in particular show no regard for the the CAT I Minima. Whether that is policy or not I can't say, but one in particular is getting a competitive advantage out of it for sure as it is very consistent.
Personally witnessed three events which were pretty blatant. Heard a few others on the radio in the hold which certainly raised an eyebrow, but without being at the holding point you could never say what they really saw.