> nobody in their right mind wants to read or participate in. T

Except for all of the people commenting and up voting! There's zero downside to turning off flags there. If you don't want to read it or participate, you don't have to.

The culture of having active discussions killed is way more frustrating and discouraging.

What if the discussion is just

Post: I think Hitler was good [+51 unflaggable]

Comments: no he wasn't x100000

If 100000 people want to cast an argument into the void, they can do that. It doesn't harm any other discussion going on elsewhere on the site. I'm posting this comment beneath a flagged/dead comment in an article labeled [dupe] and I'm okay with that.