Couldn't agree more - the claim that "being serious about OSS" requires a CLA is nonsense, and in many cases is just a cargo cult (I need it because others use it). Also, people somehow fail to realize that for CLAs to work, there needs to be a legal entity governing the project - which for many OSS projects is not the case.

CLAs certainly have pros/cons - it gives the project the right to enforce the license independently, but it also gives the project the opportunity to relicense the project without consent from the contributors. That may be a problem, especially when the project is driven by for-profit organizations.