If their marketing is to be believed, self-avowed free speech maximalist sites like Parler—“where free speech thrives”—and Frank Speech—“the voice of free speech”—claim they will publish all user content. But the reality is a prohibition of many types of legal content, including legal sexual...
You wont know unless you try. I wont get into an argument on this topic, but I would not mind federating with such an instance, as long as it doesnt have advertising/spam.