It doesn't have to, but eventually it will. At the first inevitable downturn, jobs that get cut in a newly-automated field will never come back.

People are creative, we will find new things to do (particularly as more and more people will get taught automation and coding in school, making them tech-adaptable for life, as opposed to the "boomer" generations who were often fundamentally tech-averse), but let's not kid ourselves that technology isn't burning away a bunch of jobs.