About 78% or so of the shareholders voted in favour of the deal. And will probably vote again when asked.
The lawsuit was done by a shareholder with a total of 9 (nine) shares.
If those 78% of shareholders believe that Elon having $56B MORE is a priority in their lives, then should just voluntarily give Elon their shares or send him cash.
Companies and shareholders meetings work a bit differently than what you suggest.
Other than that, the grand majority of Tesla shareholders are quite happy with the financial state of the company and would like for Musk to continue leading the company and be compensated for it.