Treble is counterproductive to this sort of problem anyway. But abstracting the OS to a layer sat above a quasi-HAL as it does, users will get OS updates with f

Treble is counterproductive to this sort of problem anyway. But abstracting the OS to a layer sat above a quasi-HAL as it does, users will get OS updates with features but without updates to the underlying hardware interface blobs. The incentive for OEMs to update drivers for security goes down radically, not up, because the users crying out for OS feature x get it without having to update anything below the abstraction layer. Ultimately the problem with Android driver security is that Qualcomm has no interest in it, and won't until some form of legislation from a large territory such as the US, EU or China forces their hand on it.