CEO of our company fired employees, cut salaries, takes 3 millions in bonuses each year since 2019 and declares he is going to retire this year, but just published he is moving to another company. What can I say on his LinkedIn post?

Our CEO has fired a significant number of employees this year preparing for financial turmoil in the market. He also cut the positions' salary for new hirings, took an increase in bonuses of 200% each year since 2019 and annonced us recently he is going the retire. Well, he just posted he will be getting a new position as a board member of another company while leaving the workers in the dust. I just saw he posted his new position on LinkedIn and people are cheering for him. Is there anything I can say to expose this shitshow without puting myself at risk?