I probably shouldn't have picked that one in particular, it's just front of mind at the moment.
That one might be better updated than others - but if it is, they don't seem to update the version number making tracking difficult, a lot of the vendors will stop providing updates to old devices. The other problem is that if you have a Mediatek, Broadcom, Ralink, Hisilicon vulnerability (all have their own kernel forks and driver forks) then every device downstream using that kernel or driver is vulnerable, and not all devices will get fixed. Even if the vendor or upstream fixes it, who upgrades their router firmware?
That one might be better updated than others - but if it is, they don't seem to update the version number making tracking difficult, a lot of the vendors will stop providing updates to old devices. The other problem is that if you have a Mediatek, Broadcom, Ralink, Hisilicon vulnerability (all have their own kernel forks and driver forks) then every device downstream using that kernel or driver is vulnerable, and not all devices will get fixed. Even if the vendor or upstream fixes it, who upgrades their router firmware?