A pretty good number of these are just pointing out differences between colloquial language and specific language.
Botanical language is useful for botanists to communicate with each other but I’m not putting tomatoes in the fruit salad. Thinking of tomatoes as veggies in your kitchen isn’t some MYTH! Calling a tall plant a tree is useful for you and I to communicate. That does not mean we are deceived or attempting to undermine the work of our botany friends.