ok, I was probably biased by all the slow routers I had, but to my defense even the openwrt wiki mentions that SQM might not be useful with routers that have a slow CPU:

SQM is performed on the CPU, as such slower devices may be unable to keep up with your peak internet speed.

https://openwrt.org/docs/guide-user/network/traffic-shaping/sqm

I don’t know what were your companies consumer base, but where I live basically everyone has the cheapest old consumer routers that are on the very limits of the openwrt hardware requirements.

yes, that’s why I started caring. all the internet connected cameras everywhere. it cannot stay this way.

Completely on point. But to add

Cameras should never be facing the inside of a vehicle, ever.

Neither outside. if you bought the vehicle with the inward facing camera, you accepted being recorded. but if a tesla appears near you, you never ever got the chance to deny being recorded.

and what should the router do with traffic going to TCP port 443? because that’s most things going to the internet. it could be video streaming. it could be a video call. it could be someone scrolling unimportant shit on facebook. it could be any of your dozen IoT devices uploading telemetry to the manufacturer. it could be literally anything. you can’t meaningfully prioritize traffic based on just what service is it, you need to keep track of the recent usage of each connection, and that will cost CPU power.

most routers are way too underpowered for that. you are happy if yours has 128 MB of RAM and 64 MB storage, and then you can imagine how is it with their CPU.

And do you need all 10 games instantly available on your PC?

if it takes multiple hours, streaming services and video calls could be lagging while the download is going. it becomes more meaningful when you are not living alone

if it hadn’t been updated in years then it will be an Mv2 extension, irrelevant to discussion of Mv3 strictness.

I don’t understand what you found, but firefox still supports the web request blocking API for Mv3 extensions, which is what ublock needs.