Benioff is very far removed from what goes on day-to-day at Salesforce. He is the marketer in chief, nothing else. This interview itself is an ad for "Agentforce". They will keep hiring engineers as normal (heck there are 104 software engineering openings on their careers site as I write this).
I also don't know how he is pulling the "AI is making our engineers 30% more effective" stat when last I checked software engineers at Salesforce weren't even allowed to use AI.
I also don't know how he is pulling the "AI is making our engineers 30% more effective" stat when last I checked software engineers at Salesforce weren't even allowed to use AI.