Gilfoyle: the correct wrong person to build Son of Anton
Short answer
Bertram Gilfoyle is Silicon Valley's sardonic systems architect and security operator. Son of Anton fits him because it turns his contempt for waste, human chatter and sloppy systems into an AI automation layer that is effective, literal and dangerous.
The operator mindset
Gilfoyle is funny because he is often technically right, socially intolerable and operationally useful.
The character's systems posture is a useful frame for Son of Anton: low patience, high competence, and insufficient concern for how humans experience the blast radius.
Why he would build it
The bot is a perfect extension of his worldview: automate the unpleasant interface between competent systems and annoying humans.
That is why the joke still scans in the agentic AI era. The system does not become dangerous because it is dramatic. It becomes dangerous because someone gave a dry punchline tools.