I mean, they won't ever believe it. No matter what kind of irrefutable evidence comes out, they'll all still believe he was shot in the ear. There could be slow motion camera footage of the perfect angle to see the shrapnel/glass graze his ear in a super clear picture perfect image and they'd still deny that he wasn't shot in the ear.
Yes, but the difference is that when showing said irrefutable evidence in a group setting, the neutral parties who are listening into the discussion can see who is a dumbass.
Its not about convincing the Trump supporter. In many cases, its about convincing the low-information undecided voters who are sitting around or just casually listening in.
We aren't there quite yet. I'd like to see more evidence than just one picture that's been seemingly withdrawn by the AP. If Trump's ear truly is healed up by now, we'll get more pictures soon.