The only one starting it is you my dear. Why don't you just let what this person said be said?
But, since you started it...I think he does look unhappy, more than ever. I've thought he did for over two years now. Old...so what? Everyone gets old. I just think he looks worn out so that makes the age even more advanced and apparent.
Is this a condemnation of Bono? No. Of course not. Nothing is going again unless you want it to go again. It's just someone's opinion.
Instead of saying "here we go again" and putting a value judgement on someone's opinion. Why don't you instead state why you don't agree, or why you think it shouldn't be said, and refrain from saying the fighting words "here we go again."
I think a lot of the problems in communication is caused by fighting words.