Although it requires judgment, I consider being part of a polemic anything that could be in the homepage of a main media outlet. Some examples:

-Trump/Musk fight continues

-A new child is revealed

-His rebuttal to Twitter is filed

-A significant interview

-He buys Twitter

-He meets the Dalai Lama

I'll prefer to settle if by any day of the week Musk is on the front page of the Wall Street Journal because of some event that happened during the week.