Based on Nim’s comment here I feel like it’s a case of the devs are obligated to include it:
As to why it’s currently on PC, it’s likely mostly to do with the fact they used the console code as a base. Also to help keep one code base the filters have to stay in the code. What will hopefully happen however is that a check will be added to the code to use different filters for different platforms (since you mention that MS and Sony have different requirements this sort of code probably already exists) and PC/Mobile will get a different filter eventually.