Whenever I've been offered stock, it has either been stock options for a private company, or RSUs for a FAANG.
In the first case, I value them at 0. The stock can't be sold unless there's an IPO or the company is sold, and me working harder is vanishingly unlikely to be the difference between there being or not being an IPO.
In the second case, the impact of my actions on the stock price is nil. I'l be happy to take the RSUs and sell them ASAP, becasue they are actually worth money, but I don't see their value linked to my performance.
I don't agree with the GP's position of zero responsibility, but stock is not a better incentive than cash in my experience. That's just internal marketing in my opinion.