Some devices had a small performance hit, but some had had their clock speeds to less than half, making devices laggy even during normal usage. By itself this

Some devices had a small performance hit, but some had had their clock speeds to less than half, making devices laggy even during normal usage. By itself this is already a problem, but they also decided to not allow you to disable the feature or reverse to an older iOS version. I don't think they informed their Apple store employees either, at least I was told to buy a new phone. They had to be sued first to add a simple setting, ffs! So yeah, I think the criticism is valid and deserved. I'm sure they had good intentions, but the implementation was shit and not only they created issues for some iPhone users, but also profited with new iPhone sales (not me, that was my last iPhone).