Do UCs accept arts supplements?

I was trying to search around online, but found it unclear if UC schools accept arts supplements (specifically UC berkeley). I had thought that they didn’t, but my mother is certain that they do, so now I’m confused. Help please?

This is from the UCB website:

When it comes to other supporting materials - such as art portfolios, resumes, etc. - UC Berkeley does not consider these during the application review. We expect the reported grades, test scores, extracurricular activities, personal insight questions, and additional comments to give us the full picture of a student’s experience and aspirations. This is why it is so important to answer each section of the application thoughtfully and thoroughly.

They don’t unless you’re applying to a major that requires them (for example, I believe UCLA requires them for studio art?), in which case you’ll be told that on the application.

If anything you are applying for requires something beyond the straight UC application you will be told during the app process.