Everyone seems to be certain that this is a bad decsion on Apple's part. However, my reading of the story seems to be that this a Samsung move.
Regardless, I don't think this is a long-term problem for Apple. The culture that Steve Jobs left (and I think it is still ingrained there) calls for pitiless insistence on meeting high standards. If LG or whoever can't meet those standards now, Apple will get them to that level via carrots and sticks in pretty quick order.
And anyway, the average iConsumer couldn't tell the difference today even if they knew that Apple bought screens from different companies.
And for those that seem to be so taken aback by the posts about Apple's need to maximize profits: you do understand that they are a corporation, right? They are there to make little trinkets that we want to buy so they can get our money. Not to improve the human condition.