Dude got old. Die, like you said.
57 ain't that 'old' ... however, the OX did go out like a true Rock 'n Roller ... with a mound of Cocaine and two Hookers in Las Vegas ...
Some of the stories of Entwistle and The Who are legion, even more scary is that most of them are true ... it's kinda incredible that any of them even lived as long as they did. Although Daltrey is said to be a straight shooter .. no drugs, no booze, no smoke, even a bit conservative (he supports Brexit)