The problem with your argument Bingo is one thing doesn't add up, when the ASA contact Bid/Pd they have said on numerous occasions that extra training has been given to certain serial offending presenters. Now add that to the fact that certain presenters have said they have recieved warnings.
Now that either points to management giving warnings to presenters for something that wasn't their fault and enforcing extra training on presenters that don't require it..... or they are lieing to the ASA and viewers which would be a very silly thing to do which in all honesty probably would of shown up on the ofcom report.
Personally I don't think any of us can really make an educated guess on who's to blame unless we know how presenters are payed in regard to bonuses or commission .... also the length of contracts the usual offending presenters currently hold.
Don't forget Steve said they can only have 3 warnings then that's it.