CC tools in PPro are so crude and unwieldy (at least in comparison with Resolve) that it's not clear (to me, at least) that the conversion RAW to log style, the way Resolve does it, would be all that useful anyway.
But, reverting to the OP, is it a certainty that PPro actually *is* baking in a rec. 709 look, from which there's no recovery, or just that the tools in PPro aren't capable of recovering data which is there?