Most people I know love that GW2 does not have an endgame focused on grinding raid bosses over and over. We may not play it non-stop but it has an appeal that keeps us coming back for short bursts of play.
TBH he just links to the guy who invented "glicko". It's not like they called him up and said "yo my man, we got a wvw issue hear me out!". They just said "let's try to fix it by changing the numbers of the variables".
That doesn't prove that whoever chose those numbers at a-net actually has a high-school degree...
It's the same as saying x+b=c+f where f*b=c/x => according to my math x = b = c = f = 1, no mistake here guys since I used the system of whoever invented algebra.