Nothing they did this week made it more unrepairable that it already was. Newest Macbooks already had CPUs and memory soldered in to the motherboard for quite some time. And this doesn't make them unrepairable because most of the motherboard issues don't come from a faulty CPU or memory, but from corrosion/other kind of damage on the smaller discrete elements like resistors, capacitors or smaller chips, which can easily be replaced if you know what you're doing. It's not something that you can do at home without equipment, but there are a lot of repair shops that can repair even the newest Macbooks with high success rate.