Yeah, dude copy/pasted the logo with the R and everything. What did he expect to happen?
If it's really true that there's no true Waffle House index, that would have some value for the world. Though I also suspect that there is something that exists for that (maybe part of a paid data subscription, e.g. from Bloomberg or something), since it isn't clear that the author did rigorous research for this fun side project.
As far as rigorous research, I looked semi-heavily and couldn't find anything in relation to it. I'm sure it's not a foreign concept to use local area data in this way for disaster planning though!