I agree - the list is truly impressive. I ran a quick spot-check and it looks like most of these blogs are of medium to low activity. Having 1000 blogs in your RSS reader with an average of 1 article per month per blog results in reading 3 articles per day on average - not bad.
That's exactly the point of RSS. Not an alternative channel to read the same one site you anyway refresh 40 times a day, but to keep track of the 200 sites which may only update sporadically