Reminds me a bit of a coworker who was here for maybe a month. He was hired into a position to support a particular group. Once he had seen how the group worked, and how they would treat him, he quit.

To be clear, he didn’t ghost us: He talked with his manager, and left the same day, as is his right in a right-to-work state.

He was probably in his early- to mid-30s; he said he had enough saved to last him through a job search, and I didn't doubt him.