There are levels to morality, from the abstract (e.g. climate change, energy usage, veganism) to the concrete (murder). Time are unstable, but there are multiple ways to make money. If you are established in your career, you can probably find work in a similar field, but the worst case scenario would be to drive a truck.
The way you frame it, you make it sound like an engineer at OpenAI has no choice but to work there or end up on the street. But an engineer at OpenAI is not going to end up driving a truck, they're going to remain and engineer.
If the author has a CV attached to their blog, the purpose is to signal competence and the target audience is future employers .