He goes into the poor practices they use in manufacturing in general that literally every other manufacturer gets right. They might use under-sized capacitors to save room on the board. The first "unibody" they advertised had two aluminum parts glued together. Some of their repairs for recall-level issues amounted to burning the board, which masks the problem and kicks the can down the road until your warranty runs out. They actively fight your right to repair.
I like how their products look and work, but they really make unreliable products that look and feel premium with substandard engineering, overcharge, perform shockingly shoddy first party repair and generally try to shift blame to customers.
So, for the engineering, you'd want to get AppleCare.. a very expensive extended warranty, on an already overpriced machine, where they will give you refurbished boards/computers, using their own often highly questionable repair tactics, like placing rubber over things to push it harder onto the board instead of re-soldering, or baking the board to mask problems.