It's not the tools' fault about as much as it's not the gun's fault in a murder. They're a means to an end.
WoL, that's what I was getting at. I think my biggest beef with Recount is that it's basically instantaneous flame bait. WoL is on a website, and requires some time between reading it and figuring out what the problem was. Recount allows those arseholes to post immediately after a fight and go "LAWL NOOB UR DPS SUX". So no, it's not the tool's fault, as I'll admit Recount has some usefulness to it. But in my experience, my opinion, it's used far more for bad than it is for good. I stopped raiding after BC, and we didn't use addons like DBM, Recount, etc in Vanilla. (My guild, that is.) It was a much more fun time. At the end of BC, when we started using more and more addons, it became a chore, and I rapidly lost interest. So I can't really comment on the current usefulness of DPS meters in raids, as my experience is years old.