The author points out that "worse" opposed to "the right thing" is better in terms of life expectancy. As being simpler, "worse" has better survival characteristics to evolve toward something satisfying (opposed to the extreme difficulty to figure out the right thing from the first attempt).
This is totally similar to the lean startup methodology in use today. Making something "worse" reduce the length of the feedback loop, allowing more flexibility, thus being better positioned to survive.
Javascript is a good example as the REPL (read eval print loop) allow beginners to start and see results right away which is very encouraging and easier to assimilate.