It can be wrong or right but it is not making a judgment based on anything outside of math.
You are correct to say the training wasn't complete but that doesn't mean anyone did anything wrong, racist, or hateful... 99% of the time it's simply a mistake.
When you label things like that as racist instead of simply mistakes you water that word down to the point where it becomes meaningless.
The problem in the last 10+ yrs of outrage internet social justice is that in order to gain attention and get traction those involved have lumped so many things into terms like racism that that it eventually becomes so stretched it's meaningless.