I think the answer to this question is yes for jobs that can be automated. If something can be automated, human beings shouldn't be doing it. CI/CD products are quickly replacing the jobs of DevOps engineers. We do not have a dedicated DevOps engineer at Hashnode for instance.
Rainforest QA, I believe at some level aims to get rid of manual testing. Let's assume everyone uses Rainforest QA in the world, thousands of manual testers will lose their jobs.