My PI often submits papers without waiting for feedback from all the authors. Sometimes this behavior is relatively anodyne. For example, I was once the second-to-last author on a paper and would have only been able to make minor suggestions to the work. Other times, I think he does not want to waste time—I am sure he would not phrase it this way—considering the opinions of junior people. For example, a summer student may collect some data, and he will write and submit a paper with that student as an author without soliciting his or her feedback. But in other cases, he will do this to a first author. For example, I have been working on a project, wrote the first draft, and now he just submitted the paper without even allowing me to read the final draft. He simply ignored my requests to read the final draft. I am not the only person to whom this has happened.
Is this ethical? There is a power imbalance, and the publish-or-perish mindset incentivizes everyone to play along. I'd rather publish than not, but it leaves a sour taste in my mouth, and demotivates me.