
Tbh i think they should do it when the storyboard is completed and done with. A lot of them seem to have an ideal stereotype of MBTI and so they add it to their characters as part of their description sheet BEFORE they make the story. And because they do it before, they dont actually have a proper understanding of how the actions of their own characters aren't matching the pre selected type

Here's the thing with misinformation, the more u piled up misinformation the more people believe that's what it is, the years of research that are accurate gets mutilated to inaccurate beliefs simply because people were just being fed with misgudes. To simply put, what u put out there, it needs to he accurate, not a lot of people know this congitive functions
I hate it when authors type their character using Myers or MBTI, it's like completely off and I'm just saddened there's a lot of misinformation ended up spreading