You're right, but that's because NA actually promotes their talent.
All of the best T2 duelists from last year got picked up besides Canezerra who is too young anyway then got banned. Then all of the top performers this year got picked up by C9 and Envy.
The best Tier 2 players this year woudn't have been the best any other year besides NiSMO and Spaz. It's basically what happened to current NA CS. The T1 players were really T2 players who got promoted because the real T1 guys left for Valorant. Which made the T2 guys more like T3 guys, etc.