I am already in the midst of it. Regardless, the PhD is not meant to build vocational skills. However, you usually find humanities PhDs in all walks of life, simply because they do teach you some things: In doing it, you are mostly on your own. No research lab, no research group, just you, a supervisor and maybe some discussion groups debating general topics and questions. What does a PhD entail? Self-sufficient, independent work. The hardest part of a humanities PhD are continuous motivation, time management, structure, reading and writing.

Humanities PhDs are fundamentally different from science PhDs, they set people up differently, teach different skills and have different requirements.