0.0/0.00 is always the best place to start when tuning the other components of your suspension as it gives you the most honest feedback from the changes you are making. By removing toe/camber we are removing their effects and influence over the tune which allows us to feel more precisely what effect each separate adjustment is having on the car. Its sort of like removing the variables from an experiment.
I wouldn't say that your finished result should always be 0.0/0.00 though, while it works well on some cars others may benefit from tweaks to the toe/camber. Toe is a surprising dominant tuning parameter and can have a huge effect on the performance and handling of a car. Camber is a bit odd to say the least, sometimes it seems to work, sometimes it doesn't, I wouldn't disregard it completely though as it can have a significant effect on how the car performs.
My advise would always be to start at 0.0/0.00 while tuning the main suspension components and then experiment with toe/camber last to further refine the tune, you can always put it back to 0 if you don't like it so there is no harm in experimenting 👍