In the 00s? Murali, McG, Akthar, Warne, Steyn, Pollock. That's 6
Along with Bond and Asif who did not take a significant number of wickets in the period and Walsh who played for only one year.
I think most kallisball fans here were pampered by watching a number of ATG bowlers due to growing up in the 90s and 80s. 6 >25 bowlers is certainly not low by non-1980,1990 standards.
For instance in the 70s, You had only Lillee, Willis, Botham, Thomson and Roberts That's five(The latter two have averages slightly over 25 in the decade tbf)
Holding also has 65 wickets in the decade.
In the 60s, Trueman, Davidson and P Pollock, That is all, three.
Underwood, Higgs and Sajjad had about 60 wickets each @ >25.
50s was another rich decade for bowlers followed by a bad decade in the 40s.
The point is, Is Steyn awesome? Yes. Is it a unique circumstance in kallisballing history when there is a dearth of extremely good bowlers? No, Not unless you limit your vision to the 80s and 90s.