This was my first thought when I saw the thread title - the tone and register of his voice does nothing for me at all. And, from a casual observance, Neil Peart seems overrated as well, although the vocals get me away from any Rush before I can really judge that for sure.
Another one that bothers me more as time goes on - Roger Daltrey from The Who. It's like Tony Bennett got a side gig with an alternate identity.
And, somebody mentioned VH, I won't comment on DLR right now, but if anything ever happens to him being in the band, they need the guy from Steel Panther to take his place. I don't listen to Steel Panther much because their lyrical content gets old, but that guy is like Dave's clone, vocally.