When you offer free training you are assuming and expecting them to assume you are the superior expert in the area. And while your experience is indeed superior and your expertise surely must be equally superior you can hardly expect to go from confrontational arguing to expecting the other party to simply acquiesce to your superiority. LOL. If I met you at a meet and greet and you said you had an opening at a class I'd probly be tempted to take you up on it. But from arguing to me just taking a knee to you? Nah. You already trotted out your medals, you can pee farther. You win. LOL.Funny thing; I've been offering free training to fks of differing opinions for at least 12 years now. Have yet to have a single one take me up on the offer.
Guess there are lots of "hard headed" folks around, if that's the PC term nowadays. But then, it's always easier to have a dissenting opinion when separated by miles of fiber optic cable.