For example:
* The trackpad on 2016+ models is too large for many users who experience palm rejection issues. * The display cable on 2016 and 2017 machines was too short, and is now starting to cause the issue known as "flexgate". It's almost a given that with enough use, every one of these machines will suffer this failure. To make matters worse, unlike the 2015 machines where the display cable could be replaced on its own, the entire display assembly is glued together on 2016+ machines and has to be replaced as a whole unit. * Stupid electrical decisions such as putting pins for high voltage backlight power and low voltage data signalling right next to eachother mean that there's a good chance the machine will fry itself if it gets at all humid inside (most machines do at some stage, especially if used on a lap). Most other notebooks do not do this and are much more durable in this regard. * The storage being soldered is fucking braindead. Apart from being planned obsolescence due to NAND flash's finite lifespan and macOS's increasing hunger for storage space, data recovery is not possible without a proprietary system to connect to a lifeboat port on 2016-2017 machines. 2018 machines have no such port and at this stage, there is no known way to recover data from working flash chips on a dead logic board without board-level repair.
Apple made far better computers in 2015. The competition also being shit doesn't excuse Apple's regressions.