An increase in share price doesn’t benefit you unless you sell, and you probably don’t want those big early investors selling lol — they are much more concerned about things like share dilution and fundamental underpinnings rather than stock price movements, they’re looking further out.
People are harping on about this one individual shareholder madlad who brought the lawsuit but ignoring the $320billion California State Teachers’ Retirement System and other institutional organizations who were also voicing concerns.
The CalPERS owned over 200,000 shares (pre-split) at the end of 2018, which was worth about $60M at the time and $555M now (at $185/share). It was a tiny part of the fund. If they voted against the compensation package, they weren't alone, BUT they got out-voted by retail AND other institutional investors (73% of non-Musk shares voted to approve - tsla-8k_20180321.htm).
Just because some investors didn't get their way, doesn't mean that their opinions weren't heard. It just meant that more people disagreed with them.