Well, apparently Apple actually restricts the repairs you can do. For example, if you have water damage, you aren't allowed to just fix the actual components (capacitors, etc) that blew, you have to replace the whole board, resulting in much higher costs and eWaste for customers. (This is from Louis Rossmann, a well known YouTuber who fixes MacBooks). You are basically restricted to mostly replacing boards and things like that, not fixing individual chips.
For a company that toots their horn about being Green, their policies sure generate a ton more waste than necessary.
And I say this as someone who almost exclusively owns Apple stuff. I am holding out with my 2015 MBP dearly for the next iteration of their laptop keyboards that don't require a $500 repair because of a spec of dust.
All this has made me a STRONG proponent of the right-to-repair movement. If Apple actually cared more about less flashy and sexy parts about being green, they'd make these parts readily available.