The poster is a bit making fun of this mindset; more employees isn't obviously better. But the "growth at all costs" mindset is real, and in that worldview rapid growth is a sign of success because you're building capacity to capture the market.

In reality the plan is everything because without a great plan more people means just more burn, and hitting the wall sooner.

Hiring people is expensive, a large team of people used to working together is a valuable asset in and of itself.