Except that literally every major event that has happened to Ichigo since the beginning of the manga has apparently been a part of Aizen's plan.
Not exactly, Aizen used every event to promote his own goal, that's for certain and that's what he said to Ichigo. He didn't cause Ichigo to become a shinigami, in a sense that was Urahara's doing. He didn't start the hollowification of Ichigo, that too was Urahara.
He profited from the confusion after Ichigo and the gang went to rescue Rukia, but that was not part of the original plan, not as I read it anyway.
After that, sure, quite possible.