How, exactly, might things "go wrong" for folks contributing to an amicus curiae brief[0]?
While amicus briefs are common, they're just arguments for or against a particular issue in a particular case. They aren't testimony, they aren't sworn affadavits and they have no legal weight.
It's essentially writing an OpEd or posting a blog post, except it's filed with the court. No one is "testifying" (in fact, appeals don't have witnesses or evidence or anything of the sort, just a review of the proceedings of the trial court, plus any arguments the lawyers want to make) in an amicus brief and no one is held to any particular standard.
And so I ask again, what, exactly, could "go wrong" here?