Your reply seems to treat “unsupervised learning” and “self-supervised learning” as synonyms, but I don’t think they are. Self-supervised is more specific. Things like clustering and dimensionality reduction and feature extraction are not examples of self-supervised learning, I don’t think. Predicting the next few seconds of a video, or predicting the next word of a text, or deleting a word from the middle of a sentence and training your model to guess what it is, would all be examples of self-supervised learning.
Your reply seems to treat “unsupervised learning” and “self-supervised learning” as synonyms, but I don’t think they are. Self-supervised is more specific. Things like clustering and dimensionality reduction and feature extraction are not examples of self-supervised learning, I don’t think. Predicting the next few seconds of a video, or predicting the next word of a text, or deleting a word from the middle of a sentence and training your model to guess what it is, would all be examples of self-supervised learning.