Paper says that "those in lambda group received no benefits in regard to [...] compiler errors". Really, would anyone expect lambdas to improve compiler errors

Paper says that "those in lambda group received no benefits in regard to [...] compiler errors". Really, would anyone expect lambdas to improve compiler errors? Also, isn't that a problem of the compiler, and not of the lambda idiom in C++ or C++ language itself? I mean, idk about clang, but at least compiler errors from msvc and gcc have always been hard to understand, with or without lambdas.