I had a 2013 Samsung ATIV Book and when the keys began to fail, I attempted to replace the keyboard. This is something that took < 5min on my 2008 HP laptop but was now impossible, because Samsung decided to glue and mold the keyboard onto the actual case.
So this isn't a problem limited to Apple, apparently most manufacturers decided that devices need to be as unfixable as possible.
It might be the result of a compromise but it is still an active choice. I think it is within the remit of a designer to think how the product will be serviced.
So this isn't a problem limited to Apple, apparently most manufacturers decided that devices need to be as unfixable as possible.