FAs are not unskilled labor working at McDonald's. The majority have a college education. They are certified by the FAA and can lose their certification for violating company rules or FARs. They are also not that low paid, starting out many make as much as starting out teachers and their pay goes up quicker. Their initial training is probably longer than the average tenure of a McDonald's employee.
I guess your argument is no one can be racist, even unconsciously, so instead you bash a field of 10,000s of trained professionals.
This is the problem in this forum. If you do not jump onto the bandwagon that it must be racist, then you are trying to say there is no racism.
In reality what I actually did, was to question why they thought it was race because in the CNN article they never said race. Then you said that they thought it was fake, and that was a presumption by you because it was never said. Further, I see the same story and do not think it leads to thinking it had to be that they thought it was fake. I will say it was possible, but, I don't think you can say it as absolutely as you seem to believe.