I don't think you can find any evidence of a
Apple actually deliberately doing things to make batteries drain faster on older models.
That would either require hurting the battery life on all models or require distinguishable behaviours that only occur on specific models and would be relatively simple to prove through reverse engineering.
Apple has been fined for the throttling, but hasn't ever been credibly accused of actually deliberately taking steps to reduce battery life on older devices.
That would either require hurting the battery life on all models or require distinguishable behaviours that only occur on specific models and would be relatively simple to prove through reverse engineering.
Apple has been fined for the throttling, but hasn't ever been credibly accused of actually deliberately taking steps to reduce battery life on older devices.