The lawsuit wasn't over the characteristics of the known degradation curves of the batteries, but how Apple mishandled this by 1) not acknowledging the performa

The lawsuit wasn't over the characteristics of the known degradation curves of the batteries, but how Apple mishandled this by 1) not acknowledging the performance characteristics to customers with sufficient clarity or notice, depriving them of information required to make a reasonable choice to repair their phones over promoting sales of their newer phones, and 2) denying legitimate battery claims, forcing customers to seek out and pay for aftermarket service and parts in lieu of receiving warranty support. The problem was that engineers up and down the chain could say with complete honesty "this isn't a problem because there's nothing unusual about how these are failing", missing the point entirely that no customer would ever be happy knowing they could have fixed it for free/$45 instead of $1000.