Yeah, I'd agree with that. Although she was pretty much OP in the Captain Marvel movie too, so I'm not sure why this comes as a surprise. On the plus side I did like how the story used her more sparingly and gave the reason that she had obligations to save people in the rest of the galaxy; that people in worlds across the universe were suffering as people on Earth were. And she would only come back when absolutely necessary, and even then she was unable to stop Thanos.
Past Thanos is dead.
This is your biggest complaint?!? That the film ended just normally?! Wow... if that was the biggest problem with Bayformers...