Right.....forgot you must know my buddy. Same with my buddy who has had the s4 for years, and won't give it up. He is a sports journalist, he issues his phone more than most. No burn in.
Therefore, unfortunately, you are incorrect. Much more reputable and respected resources in the tech industry disagree with you. Again, new year, better tech. Burn in (or rather image retention), was more likely on the S3 than the S4, and more likely on the S4 than the s5. Today, the s6 and note 5 have the best screens, from a tech standpoint, in the industry. As I stated before, just because you can find it here or xda doesn't mean "all screens" will get burn in.
You can throw the phones with burn in, in the pile with the bent iPhones, iPhones with dead pixels, exploding batteries, etc.
Does that mean all phone suffer from the above? No, most don't, and people need to understand that on here. It's almost like listening to a political debate, the way arguments proceed here.