Language is a tool for communication, a phrase that will be misunderstood is worse than useless. Where a particular usage makes a distinction that is important to convey then it may be worth preserving, but when a historical quirk merely adds confusion and inconsistency, the disappearance and ironing out of that quirk is to be celebrated.
> No, it's pretty active and certainly in live use
The last research I saw claimed otherwise.
> It's very disingenuous or ignorant to call the correct use 'historical'
Nothing disingenuous; to the best of my good-faith knowledge the older usage (certainly not "correct" given that most listeners/readers will understand it to mean something different) is not active at least in general writing (it may still be used as a term of art in philosophy, but if so I don't think that changes anything). Certainly it's a minority use.