UGC or Influencer marketing? And are still UGC videos authentic when the AI is used?

The way brands are promoted has always been undergoing some kind of "evolution".

Celebrity endorsement → Influencer marketing → UGC creator videos

For the last 3 years, brands have been using UGC content because it's supposedly "more authentic", and more "natural."

But since UGC has been influenced by AI, leading to the rise of AI UGC videos, is it still authentic? Doesn't it undermine the original idea? 🤔

I think that all are important (celebrities, influencers, UGC creators) but each of them had some purpose that is a little bit damaged by AI.

I'd like to know your thoughts.