If you want to get a broad overview of design flaws in Apple products along with the issues associated with repairing an Apple product, you should take a look at Louis Rossman's channel.
https://www.youtube.com/user/rossmanngroup
There will be the naysayers that will poo poo what Louis has been putting out there as just anti Apple propaganda. But if you really watch his videos, all of his criticisms are founded in fact and he even shows you what the issues are with actual repairs he does on customer's laptops....all unedited and from his live stream. He also goes into what Apple has been doing to make it harder for independent repair shops to fix laptops which would only be a couple hundred dollars versus the thousand that the Genius bar would tell you it would be.
To be fair, other manufacturers are doing restricted supply chain practices and are moving towards system parts registration (which means if say a battery or screen is not programmed to the system it is being installed either some or all functionality is lost).