Pathfinder 2e General Discussion

It's more an issue of if there is a risk of litigation, or potential avenues of it. Having less things potentially be targets helps differentiate a products identity more and have less 'weight' if it is used in court as evidence thereof.

Another benefit is this allows them to deviate from past/common tropes that people would expect from a "Shaitan" or any other renamed creatures based on knowledge from other systems or analogous creatures of myth in future writing - even if they still borrow from the latter in most creatures cases.