Absolutely. That conventional wisdom is born out of misunderstanding, even of statements originally made by Alexander Fleming when he received his Nobel Prize, and from experiences with management of tuberculosis. They are not grounded in fact. Treating longer for most infections only exposes the patients to more harm, increases the likelihood of drug-resistant infections, and almost certainly doesn't give any benefit.
The reality is that, as I said in my presentation, the main two elements that you need for antibiotic resistance are bacteria and antibiotics. The more antibiotics, the more antibiotic resistance you get.