There's an expression in Dutch that loosely translates as "why bother with glasses and candles if the owl doesn't want to see?" Lots of animals in our expressions, probably cos of fables. In moments like these, I shrug and move on. How do you make people listen/read/think/blank? Not by insisting on using the glasses and candles you provide, that's for sure. If they want to hear what I have to say, they'll come to me, like the wonderful people who join the many gyms operated by you fine people.
Health and fitness is an even worse subject for this problem than many. In other areas, people more readily accept their ignorance I've found. But everyone knows everything about the human body and their own, didn't you know? Rank one untrained novices know the same about nutrition as I do, and more about knee safety when squatting. Which is why I never bring up or talk about what I do in the gym to anyone and avoid that topic at all costs.
If thousands upon thousands of morons want to believe "deadlifts are not worth the risk," despite it being the easiest lift to learn since all it takes is about 5 steps, then they're free to never deadlift again in their life. The go-getters who see past the fame and glory of world level athletes who just want to be a little stronger, a little healthier, are free to come up to me and ask me for a form check.
But please, continue.