The running harness myth

I frequently read that dogs should only be attached to their running harness as we are about to start running and not before that or in any other occasion. They say that the dogs relate the harness to the fact that they may run and pull (which makes sense) and, therefore, that we should use another harness (or collar) for circumstances where we don't want them to pull (during walks and warming ups, for example). In my humble opinion, however, this is just some kind of bullshit created by sellers or people willing to be seen as experts. My dogs wear a collar 100% of the time (even at home) because that's where they, for safety reasons, cary their ID and my phone number. Then, for walks, runs