Counterproductive for whom? The stance of the kernel developers is that whether a bug is a vulnerability or not depends on intended use. They say, we do not dictate use, therefore this decision is out of scope for us. This makes kernel development more focussed and productive.

I would argue that it is more productive for the enduser as well. Not making a decision they cannot reasonably make is better then blindly believing in a decision that is likely wrong for your usecase.