Why do recruiters keep asking me why I left my old job?

I was working for a FAANG and at the Q1 culling got hit with a random PiP and fired a week later. I've psychologically mosty recovered and interviewing for other places with 50%-200% pay increases and It was a good learning opportunity and I enjoyed my time there, but when talking to recruiters they ask me questions I find very silly and pointless: \- Why did you leave so early? \- You didn't have anything else lined up? \- Did you try for an internal transfer? I understand the question "what did you dislike/what are you looking for in your next role?" but these other questions seem so meaningless. I know they don't want to hear 5 minute+ stories about the dynamics at my old work place, so why even bother asking? I noticed at other FAANGS or more reputable companies they don't ask me any of these things but its mostly the the randos and contract work. I'm sure it's not just me who went through this, how did you handle these conversations?