I voted no. I think Aikido can make you more introspective as you try to realize why certain techniques are eluding you, but what you do with this knowledge is up to the individual.
I've been studying Aikido for 7 years now, and in that time a lot of my flaws have come to the surface, anger, self doubt, disassociative tendencies, etc... All these flaws show up in my technique, lack of Aiki, posture, lack of connection, etc... As I to improve my technique, hopefully I'm improving my spirit. I'm a better person for practicing Aikido, I don't know, I hope.
I do think Aikido could benefit from more Chinkonkishin, Misogi and Zazen, as well as more instructors dedicated to the Aikido as a spiritual path, but that's just my opinion.