OEM support for the device is needed because an alternate OS cannot provide firmware updates otherwise. In practice, driver updates also come from the OEM. Providing the Android Open Source Project backports is nowhere close to full security patches. It's unfortunate that most alternate operating systems mislead users about this by setting an inaccurate Android security patch level field, not being honest about what's missing and downplaying the importance of it.
@brahms @mox @manualoverride
OEM support for the device is needed because an alternate OS cannot provide firmware updates otherwise. In practice, driver updates also come from the OEM. Providing the Android Open Source Project backports is nowhere close to full security patches. It's unfortunate that most alternate operating systems mislead users about this by setting an inaccurate Android security patch level field, not being honest about what's missing and downplaying the importance of it.