They control ~51% of voting power with shares thanks to owning ~85% of class B shares. They have had the benefit of someone else running the company for 8 years - and increasing the value of it - and now, when things are not looking great, it’s Sundar Pichai who gets the blame, and the focus on his compensation: and not those who set/approved this compensation.
The biggest winners of Pichai’s leadership have objectively been the shareholders: Google’s market cap increased by ~$890B since he took over as CEO in 2015, tripling the market cap/stock price of the company.
Larry and Sergey run this show: they simply hired someone else to do it for them. When things go well: they profit. When not so well - like now - someone else is on the hook and is the person criticised for how things go at Google; and it’s not them.