i think the swubway slogan "Eat fresh" is a type of glittering generalities but i don't know why. can someone explain to me why.

please and thank you

What are we supposed to eat fresh? Worms? Grass?

What does it mean by fresh? How fresh are the bananas we buy at the grocery store? Should we go to the countries where bananas are grown?

Yes, I think that's an example of a glittering generality.