It would be interesting to see if this is really so. The post just cites circumstantial evidence and does not reason why this would happen.

I personally hope the days of amateur, low frequency, niche blogging are not over. It seems to me as one of the fundamental goods that internet has brought and, as the post indicates, a solid reason to have RSS readers.

For the record, the title of this post at submission time is / was, "An alternate theory as to why Google killed Reader."