I think for a field like philosophy, which is composed of a bunch of relative silos (some within broader silos like the divide between analytic and continental philosophy as well as others like pragmatism and many sets of non-Euro/Anglo regional philosophy traditions), snowball-sampling isn't really appropriate to gather the "structure of recent philosophy". However, it is a cool look at _parts_ of the current analytic philosophy landscape, and I'm with the other commenters that the aesthetics are on point.