I took a brief look at the code for one of the projects (https://github.com/emollick/concord/) he breathlessly praises and says "a software engineer would iron out the remaining potential bugs that I could not find quickly". The code looks like an unmaintainable mess.

Other commenters have pointed out that his isochrone map contains a lot of nonsense as well.

So the most charitable interpretation here is that this is a case of Gell-Mann amnesia.