From CNBC:

Google is considering a substantial workforce reduction, potentially affecting up to 30,000 employees, as part of a strategic move to integrate AI into various aspects of its business processes.

Mostly affecting the folk who work in ad sales according to the rumours, so it’s not exactly the case that the specific folk who created these systems have been replaced by them (in fact demand for AI gurus is sky-high, as are the salaries in some cases) - but it doesn’t seem impossible that that day will come.