At our institute, PhD students carry out presentations on the advance of their projects once a year. The presentations are "internal" in the sense that only undergrads, PhD students and professors of our institute may attend.
I am about to carry out my second such presentation corresponding to my second year progress. For my first presentation (one year ago), my advisor asked for my presentation and called me into his office one day before the presentation and went over it, changing it in a non-trivial way, i.e. deleting slides, changing titles, content, etc. I found most corrections counterproductive or superficial at best. In the end I did not include all corrections, just enough to keep him/her happy. I was quite frustrated and stressed since the overall tone was "this is terrible", "we are way behind in our project", "this is bad". After the presentation I got very good feedback from professors and colleagues (my advisor is not a professor). Once he saw the feedback, he changed his mind from "this is bad" to "good work, good presentation".
This has also happened a couple of times with other internal presentations at our institute. I am pretty sure this will happen again in the next days.
My questions are:
Is it common for advisors to carry out extensive and minute corrections on the presentation structure and slides of its PhD students?
What is the best way to communicate that I will not follow corrections with which I do not agree?
Or, are PhD students obligated to follow the commands of the advisor?