I’m no engineer that’s for sure! In my admittedly relatively low level of experience, additional negative static camber on a strut-based front wheel drive front end is very beneficial, especially on a multi link rear end where there is decent camber gain with wheel travel.
Both front and rear adjustments need to correspond to attain or maintain the correct balance of the chassis as not to cause excessive understeer/oversteer issues. Corresponding changes to sway/roll bars need to be made as well. As the body rolls, it changes the angle of camber to right or left.
There is a optimal amount of camber for each application and chassis, multi-link or MacPherson. The temp variation across the tire contact patch determines the optimal amount. If the inside is exceedingly hot and wearing faster than the outside, there is too much negative camber. When this is present with front wheels, it causes diminished braking capability, poor turn-in and pronounced mid-corner understeer. So, you just don't apply camber without making other critical adjustment of the suspension.
For cars with a multilink/unequal length A-arm setup, the shock/strut doesn't directly control camber. To change the camber with these suspension setups, there or two possible ways to adjust. First, the mounting points of one control arm need to be moved. This is accomplished on factory suspensions by rotating an eccentric bolt that carries the control-arm-to-chassis mounting points. Second, the length of one (or both) of the control arms need to changed. Be warned, altering the length of either of the control arms will significantly affect camber gain during suspension travel in addition to static camber.
Keep in mind; " that every change in setting in your car’s suspension effects every other suspension setting."
If the car isn't equipped with adjustable upper control arms or upper control arm mounts from the factory and neither is there an aftermarket adjustable upper control arm, shims can be used behind the control-arm-to-chassis mounting point to adjust the camber, often seen in older vehicles.
Like I said above, there's far more to just adding camber and expecting the chassis to behave well.