The literal point of incorporation is that you as a shareholder or proprietor of a business are legally separated from the corporation in the eyes of the law.
We need reforms on corporate governance. Right now Meta is basically Mark Zuckerberg and a bunch of bag holders. They can't vote him out because he has both a board seat and majority voting power all on his own. Dumping the stock is far from a safe thing for institutional investors to do if they want to avoid lawsuits or regulatory attention.
It needs to be illegal for you to both be the CEO of a publicly-traded company and the voting majority shareholder. Note I say majority, not major plurality.
There is no law or regulation which requires institutional investors to hold Meta stock. Sometimes people who don't actually understand the law make spurious claims that those investors are legally required as fiduciaries to put their funds into the highest yielding investments. But in reality there is no such requirement, and investment managers have significant flexibility unless there's something more specific in their own organizational bylaws. They can underweight Meta stock if they believe it's overvalued due to potential legal risks or corporate governance problems or whatever.