im not 100% sure but i think he was only top 10 for 1 of those years and then fell off drastically...also the other 5 years he has been mediocre. I would honestly put N0thing at having a higher chance of being NA player of the decade.
Got another year to go, but if I were to call it now it would be Jordan 'n0thing' Gilbert.
Was relevant in top tier CS for a majority of the decade.
edit- if we include CS 1.6 as part of the decade for CS