Edit: Changed title to be more accurate.
Also here is the summary from Wikipedia on what Post-scarcity means:
Post-scarcity is a theoretical economic situation in which most goods can be produced in great abundance with minimal human labor needed, so that they become available to all very cheaply or even freely. Post-scarcity does not mean that scarcity has been eliminated for all goods and services but that all people can easily have their basic survival needs met along with some significant proportion of their desires for goods and services. Writers on the topic often emphasize that some commodities will remain scarce in a post-scarcity society.
Depends on how much distortion is required to get the concept to their level. If the concept doesn’t map to there, then giving them the impression that they understand is misleading them.
In those case middle class is just fine for petty bourgeoisie. But there’s always a distortion in swapping out terms for similar terms, and that needs to be paid attention to and recognized as a potential source of misunderstanding and trouble.
Read ‘The Autobiography of Malcolm X.’ Malcolm came from the streets and had been in prison. He could break down complex idea into terms the people could understand. Don’t assume that because someone lacks your vocabulary they are ignorant. Like I siad, it’s on the leader to reach out.