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 I’d like to see more evidence than just one picture that’s been seemingly withdrawn by the AP.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.