On the model Y, the rear tires will wear down faster than the front. Found this out when the remote service came to put on the winter tire set, he told me that this is normal and rotation will make the set last longer. I swapped front to back when I changed out the winter tires this spring.
First of all, you don't need to rotate tires. Also, if you don't change oil filter, it will not be able to filter the dirty oil, so higher risk of engine failure and/or reduced engine performance.
You are not on point here. =)
The point is not just an isolated "why" for tire rotation and balance. The point people are making is that tire balance does not need to be done at the same frequency as rotation (in most situations you don't need to balance it after the initial balance), and they don't get why rotation and balance were mentioned in the same argument.