The truth is, not all businesses need to have a blog. Blogevangelists might have you believe otherwise, but there are always enthusiasts that make blanket endorsements for up and coming technologies.
The back and forth between blog pundits and critics reminds me of all the noise people used to make in the mid nineties about web sites. There were as many critics on the need for a web site then as there are about blogs now. Half of all SMBs still don’t have web sites today, but does anyone question the value of a web site?
Blogs are tools. People are keen to criticize things they don’t understand. Most people that blog don’t understand the potential uses of blogs and RSS, let alone blog critics.