New Relic Principal Software Engineer interview questions

Had good coding conversation, thought process was clearly articulated and penned down clearly. In this age, if someone is still looking for syntax, symantics, it shows lack of technology adoption in the mindset and is stuck in oldschool. It didn't move forward, but sure there are no red flags. Not sure why there is rejection, interviewer doesn't seem to have any clue why he rejected. I had been interviewer, and I know how it bites back (be careful interviewers, look for clarity in thinking, avoid mindset not needed in this advanced tech era, If I remember too much syntax and symantics , I can jump boats continuosly, wont be loyal anywhere. )