I don’t find that to be a compelling argument. Donors, investors, employers, and governments should not have a right to tell us how to behave in our personal lives. If he was recording his videos with university resources, on university time, or while claiming to represent the university then sure. Otherwise it’s just people trying to enforce their version of morality on others, and we should all reject that.
>what should it matter?
University donors don't like it. That's all. They have the right to feel that way.