Honestly, kinda true. Point out that someone is using a grifter with bad oversimplifications to support a political position you otherwise agree with? You're on the other side and want children dead.
I think it's way worse. At least on Reddit you can find smaller niche subs that are full of serious-minded, intelligent and well-informed users who have no time for pure amateur hour bullshit. R/askhistorians would be the premiere example, but there are a lot of others.
It's only on the big lightly-moderated subreddits that your signal-to-noise ratio really goes to shit, whereas all of Lemmy seems to be awash in teenage level discourse.
Hopefully it gets better as its user sse expands and diversifies into more tightly-focused and heavily-moderated instances.