99.999999% of software engineering is being a cog in a machine. Startups included. Even your own startup if you have VC money and clients. Google is a nicer cleaner machine than most other machines.
I was literally just a means to an end to churn out code on a product. I could have been (and eventually was) replaced at any moment with another generic cog willing to churn out the same code without much of a thought.
People WAY over glamorize startups.
As a human in a capitalist system
As a mammal on Earth
As a cell-based organism on this arm of the galaxy