Also that air is mostly nitrogen gas to keep the chips fresh for longer.

Do people who argue, that a bag of chips is mostly air, also think, that more soda cans would fit on a shelf if the fans were cubical?

Nobody is arguing it doesn't need air. (or nitrogen)

Those chips definitely do not need as much air as Lays is giving them. They could easily fill the bag to 80% and still have uncrunched chips, instead of the 50% they have now.

They just lower the contents while keeping the price the same to maximize profits. But most people don't notice because the bag is just filled with more nitrogen.

Oh so thats why every other chips brand also fills their bags with air/gas /s

Okay, but they could still add more than one chip per bag.

I'm still surprised that people bought that bullshit of a reason