Do you think it makes sense to have formal training for Systems Engineering?

It relies a lot on experience, intuition, and dealing with uncertainty. The uncertainty makes it rather impossible to develop an intuition. To me that suggests that it should be learned rather as an apprentice where the master substitutes as a quicker feedback cycle compared to the real world where feedback comes back years later.

Only when we understand the field well enough that we know what the deliberate practice for training should be then it makes sense to turn it into a course.