I don't think so. I think this is a common narrative in Hackernews when layoff news are shared. All the people I talk to in the industry positively confirm a boost in productivity. Its contribution to actual revenue could lag but it is present and confirmed by many.
Nah, even insane token costs don't come close to the costs of labor.
Most likely this is just 'AI-washing' - dressing a layoff for economic reasons (such as propping up their shrinking margins) as something more palatable to investors (AI).