Yeah. In that case I think the intention was to have them look bad. And since the faked person is a celebrity, enough data was available to produce a fake of suitable quality.
Maybe we will see this in the future for CEO scams. Though in that case maybe a good UI that clearly indicates that the victim is called by an external user "Mr. Big CEO <hackerperson@totally-not-s.us>" might already be helpful.
Maybe there are more instances, but this made the local news.
I only get localized results on the phone, so here is a German link. Use deepl or Google translate: https://www.tagesschau.de/investigativ/rbb/deep-fake-klitsch...