My criticism of Haidt was that his "foundations" are partly political, and aren't likely forced by the data (especially since social science models aren't exactly falsifiable or the experiments aren't often replicable). Haidt's agenda is the centrist one of giving more credit to conservatives, in opposition to the woke extremity of liberalism.

And we even have a smoking gun in this case, namely the way in which he added the liberty foundation to placate libertarians:

"A sixth foundation, liberty (opposite of oppression) was theorized by Jonathan Haidt in The Righteous Mind, chapter eight, in response to economic conservatives complaining that the 5 foundation model didn't capture their notion of fairness correctly, which focused on proportionality, not equality" (my emphasis).

https://en.wikipedia.org/wiki/Moral_foundations_theory#The_liberty_foundation