Slack Localization Project Manager interview questions

Recruiter screening, next week, screening with the "Hiring manager". How can you go from being an "assistant" to being head of the whole Localization department. I asked the "hiring manager" if she/he would feel threaten by bringing in someone under her/him with 20 years more professional experience. I guess... that question got me out of the race. I would not want to work with people like this. Young and insecure. Feeling they know it all. Typical millennial star up mentality not letting the Gen X professionals a real chance!