I agree to an extent, but when explaining things to beginners, there genuinely are elements that are 100% impossible to understand until earlier, building-block

I agree to an extent, but when explaining things to beginners, there genuinely are elements that are 100% impossible to understand until earlier, building-block concepts are firmly under one's belt. And knowing that there are hard limits on understanding is important. It is almost reassuring: yes, you don't (and can't) understand x right now, but you will be able to when you enhance your mental models! Learning is powerful! Contrast that to "you can understand anything just as you are" which is a dangerous attitude, IMO, because it teaches that students don't need to change. But what is learning, if not that?