Here is another link from his blog: http://matt.might.net/articles/tenure/

And under the section called "A regret: Not pushing for open-access" he says:

"My hope is that tenure will provide me opportunities to steadily shift computer science and medicine toward high-quality, high-impact open access venues.

The reason I feel especially ashamed over my behavior is that in the course of my research for my son, I have used my privilege as an academic to punch through paywalls with impunity to reach medical papers.

In a damning irony, even this paper is behind a paywall.

I realize that few patients or parents have the ability to do what I did, and they never will, until all of academic medicine goes open access.

In computer science, academic paywalls stifle.

In medicine, academic paywalls kill."

I suppose the main point still stands.