Well, no, but then my company has invested not a penny in new equipment for the past 40 ish years on the stuff I use.
So it's all, old fashioned skill and care to do what I do.
There is always a trade of between speed and quality.
I've no doubt by running machine slower and looking after tooling wear more closely Apple could work to higher tolerances, but there is a balance to achieve and sometimes it's just easier to make a load of parts and mix/match the ones that fit best.
Apple fans should not see this as an insult, it's just the realism of making things fast.
There is a difference between a production item and a high precision prototype you could spend hours making and throwing away bad ones.
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To be honest, the tolerance of a product it not something I ever think about. If it looks good/perfect, I don't question how it got there.