Because if you do learn some SQL, then the problems with ORMs become annoyingly apparent.
I agree that most Django coders will be fine with the ORM. I guess I don't see that as a good thing, though.
I suspect that's the problem. It's neither my feeling or my experience.
Every platform/language/OS/chip I know has annoyingly apparent problems. In my experience high-self-conidence-low-self-awareness folks are too keen to drop-level and 'make it right'. And love feeling how smart they are ('everyone who disagrees is obviously not as smart!) Too often 'smart-guys' cost more, long term. And I'm not ragging on you. That was me in my 20s. Embarrassingly.