Yes, that’s exactly what it means. Often, participating is very unpleasant. (I had to leave the Holocaust denial discussion - that one was too personal for me.) And I still think we ought to respect places where people do get to talk like that.

There is good and bad, and good people can’t assume they’ll always be able to fight harder or yell louder. On the contrary, bad people tend to be better at fighting and at yelling. So if good people fight and yell, they give up the long-term advantages that they may have. Those advantages are that appeals to our common humanity sometimes work, and that peaceful coexistence makes everyone safer and wealthier. But to have these advantages, you need to be willing to tolerate people you hate and hear them out. After all, that’s what you want the other side to do.

(Sometimes that doesn’t work and you do have to fight, but if you’re in that position then you’re already competing on the enemy’s terms. The Allies didn’t win World War II because they were the good guys. They won because they had more guns, and next time the bad guys may have more guns.)