I would say yes to Rondo being a top 30 player (though barely).
If you go through a list of names you might feel differently.
Lowry
DeRozan
Wall
Beal
Horford
Millsap
Rose
Noah
Butler
James
Love
Irving
Bosh
Curry
Thompson
M Gasol
Conley
Harden
Howard
Aldridge
Lillard
Griffin
Paul
Leonard
Parker
Duncan
Dirk
Davis
Durant
Westbrook
Ibaka
That's over 30 names and those are only from the 16 current playoff teams, plus OKC.
Stop, lol

. Rondo isn't better than Ibaka?

Wow. Millsap and Horford aren't top 30 players, either, imo. Is this just your opinion, or did you get it from somewhere? I mean, Jimmy Butler - really? Yeah, he's having a breakout year, but he's not in the top 30. I guess that we'll just have to agree to disagree on this, which is fine. Where are Paul George and Demarcus Cousins, btw, not to mention Carmelo Anthony? I'm not a Melo fan, but that's more than a little ridiculous, imo.