It is? I'm not a big social media person so I don't know. I do know, that I've seen highly opposing view points for touchy topics on reddit many times and those posts get many up or down votes. Sometimes I see a post is locked from further discussion etc, but the posts are still there allowing everyone to see all view points.
But on mastadon/ lemmy all I've seen so far are hateful hypocrites who instantly block/ban/remove your post etc. If you fully agree with someone, except for the hypocritical part of there post and you echo that back to them, blocked/post removed.
Whoops. Maybe I just mean the fediverse in general not "lemmy" in particular. Sorry, it's all confusing.