I think we are talking about two different changes. You are speaking on immediate changes (per the link provided), and I am speaking the gradual change over time.

My previous car had upgraded polyurthane bushings, so I am pretty aware of operation of those. Understood different bushings may have higher tolerance to overall symmetry (not debating that). However, the gradual changes over time of other suspension components wearing, and changing operation function also plays a part. Of course this is tolerance by the exact driving that you do, and how frequent. Are you in a state with many potholes or smooth roads? Is this a daily driver, or weekend toy? The variables go on.

My suggestion is all cars symmetry will eventually change over time, and not to risk it "appearing to be okay" when it is not. Just saying, a few degrees can be detrimental on any car, why risk it? Better safe than sorry is what I go by to protect the investment of tires.

 

The only gradual change over time is the degradation of the bushing material, and if you lower the car without resetting the bushings to a neutral position you'll get plenty of bushing wear. Lots of shops make this mistake.

If you don't do something foolish and you're not bending suspension parts, your alignment isn't changing substantially, and tire life on performance cars is relatively short - in fact, a few track weekends and a set of tires is just another consumable like brake pads and rotors. So, yes, different perspective entirely. On any of the F cars, either you'll dry rot the tires because you're saving the car for the next owner, or you'll burn up the tires in a year or two well before bushing wear causes a significant alignment change. Nobody is putting 80k mile tires on these cars, and 20 - 30k is reasonably acceptable for most of us knowing it's going to be a great 20 - 30k miles.