Gerry Fiennes said in his (career - ending!) book that he once made an announcement on then lines of 'this train was delayed by management incompetance' and looked at the passing passengers for reaction. There was none.
Personally, and having commuted in the 1970s - 2000, when my train arrived very late I welcomed an apology - even if of doubtful validity - because it meant someone had noticed. When you get off a heavily-delayed train and walk out of theb station to complete silence one feels that no-one has noticed, and therefore no-one cares.