This is something I "confronted" TBL and the Solid group about recently: complete lack of dogfooding—they're all using GitHub and Gitter and whatnot, not their own tools. (Natural question arises: "if you aren't even using your own tools in your own work, how/why should we believe you when you say it will be good for us?") It's a phenomenon that I've seen commonly summarized as "X for thee, not for me".

It also reminds me of McCarthy's response to Steve Russell's proposal to actually implemeent eval: "ho, ho, you're confus[ed]".