Over temperature? Nope. Or to be precise, not well-engineered plastics. There are a ton of games one can play. For example, one can mix something which expand

Over temperature? Nope. Or to be precise, not well-engineered plastics. There are a ton of games one can play. For example, one can mix something which expands by 1%, with something which contracts by 1% (which can also mean expanding in the opposite direction). Modern lenses do very well across temperatures. Over time? At least based on what I've seen, older plastic lenses have not aged well. Of course, that means more sold products. A new lens will blow away an older lens if the older ones is plastic and slightly wobbly. Planned obsolescence.