Leftists and ultra right wing were starting to get banned on Reddit long ago and federation and internet archtiecture and infrastructure is made by generally leftists and libertarian types. Gab is fediverse software. Lemmy.ml and hexbear are ex chapotraphouse folks. So yeah, lots of leftists and libertarian types are around these niche and relatively new (I started using the fediverse nearly 10 years ago lol). Surprise pikachu face when normal people stop using reddit and twitter and see leftists having discussions out in the open without recourse since they were shielded from them by corporations, but it shouldn’t be that surprising honestly