Comment by gambiting

I get your point, but even your car mechanic would be able to tell if a component they worked with previously has changed only to make it more difficult to replace. You might argue "how do you know that was the only reason" - well, Rossman has a video on a USB-C charging controller embedded into the macbooks, previously if that burnt out(and they do burn out) he could just buy the chip itself online for a dollar. But after one iteration of macbooks, apple replaced it with identical chip with a changed pin layout and model number incremented by one - and they have secured exclusive production of this chip, so you can't buy this for a dollar any more. There is no hidden design reason here - it was clearly changed to stop people like him from repairing macbooks, because their specific chip revision is not available on the open market.