Incorrect. Read again. I asked the question “Does Sketchup come with any default hotkeys?” This implies that I had looked but found nothing obvious.
Fwiw, I am into the 3rd explainer video and at this point no hotkeys have been mentioned. And no reference has been made to the Tools menu.
[Aside: Yes, all these things are obvious when you know the answer. However imho, they are not quite as obvious as they might/could/should be.]