I'd say not so much as advocated by the blogosphere (which can be annoying, as fans of almost anything often are), but by the people actually designing and using FP languages.
In any case, there is certainly valid criticism of FP, but Bracha's just isn't it. My impression is that the guy -- as clever as he may be in other areas -- barely understands FP, and makes disparaging remarks about things he isn't familiar with. Read his blog; every assertion he makes is shown to be incorrect or misleading by people who do understand FP, like Tony Morris or (very politely) Philip Wadler himself.
In any case, there is certainly valid criticism of FP, but Bracha's just isn't it. My impression is that the guy -- as clever as he may be in other areas -- barely understands FP, and makes disparaging remarks about things he isn't familiar with. Read his blog; every assertion he makes is shown to be incorrect or misleading by people who do understand FP, like Tony Morris or (very politely) Philip Wadler himself.