It doesn't look like he's cracking his knuckles to me[0], but it's admittedly ambiguous.
And it's odd that cancel culture is being blamed here, and not the employer and their policies. Even the person who posted the image on social media has admitted they may have overreacted and said they didn't intend for the person to be fired, while your comment assumes that to have been the intent all along. Yet while the fault lies entirely with the employer, the blame inevitably is shifted entirely to activists on social media.
And it's odd that cancel culture is being blamed here, and not the employer and their policies. Even the person who posted the image on social media has admitted they may have overreacted and said they didn't intend for the person to be fired, while your comment assumes that to have been the intent all along. Yet while the fault lies entirely with the employer, the blame inevitably is shifted entirely to activists on social media.
[0]https://www.nbcsandiego.com/news/local/sdge-worker-fired-ove...