The kernel doesn't care about third parties though, that's why the kernel API/ABI is not stable. This is one big advantage to doing it that way: sure, you need

The kernel doesn't care about third parties though, that's why the kernel API/ABI is not stable. This is one big advantage to doing it that way: sure, you need to have a consistent migration plan in flight to make sure you don't break mainline in the process, but you can immediately remove the old way without having to care about third parties, once you're done.