[Matrixbeast]

When Tommy couldn't get a straight answer out of Dimetria, he kept asking before Alpha 6 told him to change how he asked the question.
He couldn't figure it out and stormed away complaining about how Zordon could always help.

That alone summed up Tommy perfectly. He wasn't the leader. He was just a field commander. He was only doing what Zordon told him to do. His plans were to just look at someone smarter (Like Zordon or Billy) and say "Yeah, do that!"

He didn't know what he was doing, he was just a walking sword that someone else would point in the direction of where to fight.
(Yes, he does become smarter in Dino Thunder, but this is MMPR Tommy we're talking about)

Dimetria may have been useless as a mentor, but she did something Zordon didn't. She didn't coddle the rangers. She didn't tell them everything. She helped the rangers grow by teaching them to solve problems on their own, and when Tommy didn't have Zordon and Billy to tell him exactly what they needed to do, you could see Tommy's ability to lead dropping, too.

He has the skills, but back in MMPR through Turbo, he sure as hell didn't have the brains.