I'm just confused why Meta needed to do this. Isn't fingerprinting good enough to not risk building this? All I can think is they use something like this to pro

I'm just confused why Meta needed to do this. Isn't fingerprinting good enough to not risk building this? All I can think is they use something like this to prove out their other tracking tech is working (this is the test set effectively). It is obvious that they really have several of these types of tracking technologies so that if one gets found out/patched they can switch it off and say 'look we stopped' all while still tracking with impunity. It just seems dumb that they would keep something this blatant in use.