It's interesting how the meaning of this emoji changes completely depending on the context. In math it means multiplication, in voting it means "no," and in collaborations it means "and." It's a great example of a single symbol being used usefully in various situations.

It has become established as a stylish symbol for "collaboration," especially in K-pop and the fashion industry. Using multiplication (✖️) instead of just addition (+) is because it gives a dynamic feeling that two entities are meeting to create synergy and new value. Thus, it has transcended its original mathematical meaning to become an icon symbolizing creative encounters.