I own Micro43 and compact cameras, where lens profiles are integrated in RAW files. With software like Capture One Pro, I can easily enable or disable theses built-in profiles. Actually, there is even a slider allowing to enable 0% or 100% of the built-in profile, and whatever percentage in between.
In LR (CC, Classic or LR6), the checkox for enabling or disabling profiles does not work with built-in profiles, which always stay enabled. This seriously limits the possibilities of several cameras which possibilities get unleashed by actual RAW developpers like Capture One Pro.
I'm actually a COP user (after switching from LR) but DAM sucks with COP and this built-in lens profile thing is the only deal breaker for me to come back. So please let users disable built-in lens profiles, or at least offer workarounds.
As a workaround, a dumb "zero" profile that would replace the built-in one (not coming on top of it) could do the job.
This has been implemented for select camera models going forward from the August release (Camera Raw 12.4, Lightroom Classic 9.4 and LIghtroom Desktop 3.4). There are no plans to make this retroactive to previously released camera models.