It really does prove it. If they were completely aligned with politics, they would have ALWAYS voted in a predictable way.

They may have more conservative or liberal tendencies, but to think that that all Justices will vote the way that people want to pigeonhole them into is ridiculous.

You are seeing things in a very black and white way.

I suppose it proves they aren't 100% (not 99.9999%....100%) bound to always make decisions precisely aligned with a political party.

But no reasonable person suggested that.