I never said don’t not tell people they’re wrong. But for instance one of the most dangerous things in any faith are ex-believers and every religion knows they are dangerous because of how effective they are at changing people’s minds. Leaving a faith is typically one of the greatest sins to said faith. That’s not an accident, they understand marketing and how ideas die. Now some ideas are tough to kill. There’s always going to be some person who wants to control everything at essentially any cost, I’m not sure that’s going anywhere anytime soon. Same with the idea that X people are good and Y people are bad not based on actions of said people. That is tribalism isn’t likely to go away anytime soon regardless of really anything we do short of genetically altering humanity. It’s like the idea of war or hatred itself, it’s too fundamental to our organism to go anywhere without some particularly extreme efforts. That’s not to say ideas don’t die. There’s been a plethora of bad people leading bad causes essentially lost to time and that’s because ideas do die for all sorts of reasons including people denouncing them.