> I don't think maintaining these drivers is currently a huge burden on > us. But decoupling them from the build will almost certainly lead to > some degree of bitrot.
This 2nd sentence is the truth. At least when something is coupled to the build, it might warn us of the unintended consequences of something else in the tree. There is no point in half-disconnecting something from the tree; it is just leaving a mess for someone else down the line.