yeah the practices around it. Technically the test itself can be predatory in the sense that it's wrong, and people believe that it isn't.

Similar things in society have caused far worse outcomes. Notably, antisemitism. Though this isn't nearly the same thing. People have a propensity to ascribe themselves to labels, or vice versa. And people like existing in groups. Labels are an incredibly easy way to define and arrange people into groups.

Just being wrong in it of itself isn't technically predatory though, but once you add in aspects like the MBTI pretending to be credible, suddenly now it becomes a lot more predatory on a personable level.

you ever taken an online personality test of any kind? Ever notice how it says that it's just for entertainment and shows no real data/labels? Similar thing there.