Anyone in tech in the bay shouldn't be surprised.
The bay area is quite liberal, but then there are a lot of people who move there for work, people who want to run their tech businesses in the tech capitol. They go to silicon valley, buy homes in the bay, and usually stay out of politics because that's generally the right way to go in the workplace.
However, they are not necessarily liberal, and often very money centered, the kind of greedy fucks who get upset that tax dollars might pay for social services. You have everything from liberals, anarchists, libertarians, to alt right fascists. There is a wide mix of beliefs and people mostly just stick to the tech and keep getting paid, because that's called being rational.
Is it surprising that these executive who "stayed out of politics" are now adopting MAGA ideology? Fuck no. The tech execs have always been the more conservative and greedy of tech. Their politics are "make me rich, bitch". MAGA is pro AI. They want to invest in AI. It's as simple as that for the most part, except some are a bit more racist and transphobic than normal and might like that aspect too. But most could not give a fuck as long as their car has doors that open up ways