Breaking down barriers to entry is indubitably a good thing. I write the kind of stories that SIngaporean publishers will never touch. The Internet allowed me to self-publish some of my stories and reach out to overseas publishing houses that will take on my work.
As for how a modern writer has to turn into a writing machine, that phenomenon has been with us since the last century. Writers like Robert E Howard, Leigh Brackett, A. Merritt and other popular writers were so astoundingly popular because they could churn out large numbers of incredible stories in a short time period. While the requirement for mass output hasn't changed, computers, word processors and other technologies make it easier to match or even exceed their output.