Seems like Zuckerberg had already made up his mind and needed an engineer to positively confirm his desired path through a very power imbalanced chat... No shade towards the engineer at all, but besides the very first "My instinct is” comment the engineer literally could have just been ChatGPT and Zuck would have gotten a similar convo.
In fairness if the founder and CEO pings me and asks me who the company should buy, you can bet I'm giving a similarly hand wavy bullshit answer.
Much more useful than "this one".