I don't see how the "like" button is perceived as judgment. It's basically a way of agreeing with the poster without actually posting a reply.

Hypothetically, if we remove all of the thanks, hugs, and like buttons, there's still the risk of not receiving replies or receiving dissenting opinions. No matter what buttons exist, one risks not receiving acknowledgement when posting. Conceptually, not receiving a like is no different than not receiving a written response that says, "I agree with your assertion."