smirking
macrumors 601
Yes, you are right, they replace few things, but in recent memory, the 2011 graphics fiasco is the one where faulty was replaced with exact time bomb.
The thing is that we don't know what the other options they were considering were like. It's entirely possible that the best possible outcome they could see was to give you a time bomb that may or may not go off vs options that were sure to go off. People assume that once a problem is known, Apple surely knows exactly how to fix it and the only reason why they wouldn't fix it is because they're scared it'll hurt their profits.
I find that implausible. It's far more likely they either don't have the answer and are just trying to buy time or the other options that are available are even worse than the option everyone is angry about.
They also don't want to deploy any solutions that might have unknown risks. If someone comes up with a brilliant idea that is guaranteed to fix the keyboards, but is untested otherwise, they're probably not going to rush to roll it out. They have no idea what else it might do besides fixing the keyboard. The last thing they want is to discover that this brilliant fix did indeed cure the keyboard issues, but created other issues that eventually would lead to the graphics card shorting out.