I don't agree that Apple's quality control used to be better -- many people who purchased Apple products in the early 2000's had issues as well. You can scour the forums for problems with Powerbooks, early Macbooks, iPods, etc.
Personally, I had issues with my first two Mac laptops and my first iPhone (iPhone 4), but have been lucky and received a perfect rMBP, iPhone 5, & iPhone 6.
If we had enough data to see what the failure rates on each product was through the years, I doubt you'd see a pattern of worsening QC. We hear about the problems much more now, though, because Apple's sales are about a gazillion times higher than they were ten years ago, and anyone with an issue can make a youtube video about it.