Again, IF you wish to use the round trip processing or raws from LR to Photoshop and back, Camera Raw has to be on version parity with LR. Camera Raw does this part of the processing. You can still do this and have LR render those raws but you'll see a warning that the two are not on version parity.
Of course, if you don't use this workflow, that disconnect is moot.
Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"