Have you noticed how much US political coverage is based solely on anonymous sources, often ones whose political biases and level of knowledge about their claims are not disclosed to the reader?
Sure, and imo, those more complicated questions which don't have a clear answer shouldn't be top snippets. Snippets are things that you can explain in 1-2 sentence. Most of those political issues are far more complicated and require paragraphs to fully understand all the nuances and sides of the story. A simple quick reply by Google Home isn't gonna cut it, so they shouldn't even offer it.
That's the difference, when I search something on my PC and get 10 different results I can read through, vs when I ask Google and get a single sentence back, or see a snippet at the top with a single sentence.