username123321,
“It’s a shocker. I know. Lubavitchers believe that their Derech is more true than the other ones.”
I don’t think anyone has a problem with that. The problem arises when people perceive that they are being missionized. Because, another shocker, I know, Litvish, Satmer, Sefardim, etc. also believe that their own derachim are more true than the other ones. And yet, you’ll argue with them over it as you noted above. Don’t get all offended when they argue back.