You're right! Rocks have a sort of wisdom & practical value that Trump lacks!
Why,a stone has dozens of uses, while Trump is a pretty useless excuse for a human being! I guess we could say that Trump's enormous caboose might make a good paperweight, but a rock makes a much more attractive option,& has the advantage of being blessedly silent & ungrabby!
I'm old enough to remember pet rocks,& I can say that they were indeed better pets (& conversationalists!) than The Donald!