I think Group 2 is, in practice, more reasonable. It seems like the only time someone gets banned is when they're a huge asshole about whatever controversial opinion they may have. I've yet to see a tactful, levelheaded person be banned for their controversial views. It's like the only casualties with Group 2's ideals are annoying assholes, which hardly feels like a loss.

To me, having terrible people silenced in your community seems far better of a "drawback" than having marginalized people harassed in your community.