I have never argued against starches per se, but I have always advocated a healthy bit of caution when it comes to unthinkingly jumping on the RS bandwagon. Did the Inuit ever eat cooked starches that had cooled in the interim? Probably, but you would have to establish that this was their preferred way of eating them to even remotely begin to formulate a convincing argument. Good luck with that ( although I expect you will simply ignore this and assume that they did and go on your merry way )
Your confirmation bias is of monumental proportions!