The MCU should have ended a little after Endgame. The MCU Earth is now fundamentally different than current Earth to the point where it is harder to write resonant stories in that Earth.
That the MCU had to reach into the idea of multiverses is a symptom that the plot baggage of the MCU is now a drag on the franchise.
Usually people use the term "unskilled labor" as justification that those working said jobs don't have any skills and therefore shouldn't earn a living wage.
The anger isn't in the denotation of the term, but the connotation.