I think it’s more that you don’t get many right-wing extremists and the mods don’t protect the ones that do exist from seeing things they don’t like.

There are still a lot of neoliberal kind of conservatives on lemmy, and then also right-wing types in the form of tankies, but for the most part I think the light touch by most of the moderators means that facts (which favor the “left”) tend to be allowed to persist in a way they don’t on many social media that see profit in extremist content.