No it isn’t . Like @SFO 1K I was on a site tour a couple of weeks before the outbreak. In one of my past lives I was in food service and I have an interest in the operation of industrial kitchens (no direct customer interaction) and interacted with several employees and at no time did I see any sign of unrest or unhappiness (other than grumbling about not being able to get a schedule change)
DIA Kitchen Workers Accuse United Airlines of Intimidation, Unfair Work Conditions - 5280
Have you actually read this piece of union propaganda? In every instance where there is an attempt to unionize a workforce that has ANY resistance this type of union narrative is run out.
End of rant.