I thought that some of these points were digs at how the Broken Age kickstarter went and how that game was compromised on so many levels by modernisation until I've read the date.
You might be right. The Kickstarter for Broken age was February 8, 2012, this article was written Apr 14, 2013, while Gilbert was working on The Cave at Double Fine. I wouldn't say it was a dig at Broken Age (or that Broken Age was compromised by modernization), but it is an expression of his preference for a different path, and laid the groundwork for what he chose to do with Thimbleweed Park.