Yeah the cucumbers are an excellent example and within the EU, or at least Germany the most ridiculed one. People here don't care that much about the curvature. In fact imperfect vegetables are considered more organic by many people. On the other hand cucumbers with not so good curvature get thrown away, increasing food prices.

The thing is this: most laws were invented with good intentions and reasoning behind. But that doesn't mean they thought well enough about them.