You're overthinking it bro for sure, C9 did a change 2 weeks before moving their IGL onto a different agent. Slotting 2 different players back in and were much better off. I gave you examples on why your argument isn't consistent and more seen as cope for NRG than anything. Let's wait and see how GIANTX does without Redgar and see if your argument is valid, because it is a good argument to make but we have seen many times that it is not really the case. SEN was 100x the better as soon as they slotted in johnqt and Zellsis than before with the previous igling system with Marved and Dephh.
edit: also if you think it is based on rust, look at moose and runi on C9. Or wo0t who sat out for 6+ months to begin playing franchised when he turned of age.