The thing is, he looks his age, normality incarnated here below! He looks like a 50+ yo man who LOVES Taco Bell! If you don't pay attention to your diet and exercise once you're on the wrong side of 50, your body's gonna swell, it's (a curse) hormonal, call it Nature's revenge. As our great philosopher once said, "what a drag it is getting old". To me, he doesn't look fat as if it was caused by medication (cf JFK for example).

The only difference I see between the 2 pics is: no more facial hair.
If he's really trying to lose weight, good for his health because extra pounds are more likely to cause pain and illnesses at that age but if he's not, wtf?! He'd better do something about his voice and breathing if he wants to go on singing because the vid you posted is ... *no words can tell* It's sad to see the rockstars you grew up with becoming the shadow of themselves...