And hadn’t it already been established that Qui-Gon couldn’t appear “in the flesh” because he hadn’t completed his training before he died? I’m sure this was explained in one of the cartoons.
The 2017 book From a Certain Point of View showed that Qui-Gon had learned to appear in the flesh by ANH (but it took a lot of effort to do so). All the show changes is that Jinn knew how to appear in the flesh a decade before it happened in the book.
So they have altered canon yet again just for a few seconds fanwank? Jeez