Ohh.... that's how he used to sound.
I believe he does "choose" the way he sings now as it presents little to no effort. That's why there's the drop consonants band whisper time singing: it's easier. It takes no effort to sing that way.
The other way, the old way, he has to use his diaphragm and his stomach muscles to belt it out.
Old way is 1000 times better.