Earlier quoted context omitted.
Agreed but paying an exec $1 in compensation salary and $100m in stock should also be illegal.
It shouldn't be illegal, it just be taxed at a reasonable level making it more equivalent to getting the same salary in cash.
The advantage of RSU over regular cash comp is that they can appreciate while not yet vested - it’s like putting your future salary into stock market, it can go up or down. Then when vested, it’s taxed as cash salary (no long term capital gains advantage here).