Mamardoit
When they open their mouths to speak or when they post on GN or anywhere else. Certainly when they are interviewed on TV.
How do you make your judgements about people?
I judge by what they say, and what they do (both now and historically) their level of expertise or knowledge (doesn't that include education?), the evidence they use to justify their words/actions.
Not an exhaustive list.
While 'appearance' shouldn't always matter, there are times when clothing and demeanour are purposefully used to make a statement or convey a desired image