But all these are things ordinary people might want to bring and might not even be aware are a problem, which is what you asked about. You seem to have a quite limited idea of who an "ordinary traveller" might be.

So make it easy to look up and don't let guesses at what some random country in the world might object to dominate all your travel packing and planning (Guesses because until I checked earlier I wouldn't been sure an apple would cause problems anywhere, but apparently at least Australia objects to any fruit). Which was the point of the comment you replied to.