Boomers hiring managers called me a job hopper for having internships in college.

I applied for this position where 5 of the people who interviewed me are all boomers. I had 4 internships on my resume and they asked me why I kept hopping on opportunities. I told them that internships usually last one summer or semester. Also, they’re part-time. One of them told me that she’s disappointed I moved jobs so much. I’m literally new to the f*cking work force.