Agreed. Further, I doubt any of the OP’s examples are tracking. lui=english just means to have the page use english (not spanish, chinese, etc.), cat=web means not shopping, news or anything like that – just a web search, and while I;m not sure about device, I THINK that refers to whether the result should be formatted for phone, desktop, or such.

If you trust this source, it turns out that it is pretty easy to see your camera feed even if your camera is off: https://techxplore.com/news/2024-02-camera-hackers-spy-cameras-walls.html

I read about it on lemmy, too. I guess I – or one of us – should have cross posted it here from its .world source: https://lemmy.world/post/12081766

Edit to add excerpts:

Results vary on how far away someone would have to be in order to eavesdrop on these different devices. For some, a peeping Tom would have to be less than 1 foot away; for others, they could be as far away as 16 feet.

For consumers, Fu says a plastic lens cover might not be guaranteed to protect you—infrared signals can still get through them––but it is a good first step to battling this kind of cyberthreat.