>The new hires will largely work across product development, engineering, research and sales.
I wish the article would've been able to break down the amount of people that they wanted to hire in each area. I would think that if they're trying to break Anthropics momentum in business, they'd be hiring a lot of salespeople.
Hiring sprees signal growth to the market. Growth is the dominant metric for pumping the IPO stock price considering they're nowhere near profitability.
Doesn't matter if they're needed or not. They can always be fired later.
If your work is parallizable, you can get more done. Eg more enterprise features you weren't currently going to do, more sales calls, more marketing campaigns, etc. mythical man month only applies to highly coupled work with large ramp time. Engineers often don't spend enough time planning to keep work decoupled (and with less people it's unnecessary overhead to do so).
Not necessarily true even for seemingly parallelizable work.
I can often do 3 unrelated tickets faster than I can hand 2 off to 2 devs. The PM will wish we could parallelize, but sadly conceptual locality is a thing.