How is this the great leveler?

"The Great Leveler" refers to the idea that significant events or forces, such as wars, pandemics, or economic crises, can disrupt social hierarchies and reduce inequality by affecting everyone regardless of their status. These events often lead to widespread loss and transformation, prompting shifts in wealth and power dynamics. As a result, they can create opportunities for social mobility and redefine societal structures, making the experience of hardship a common ground for all. Ultimately, the concept suggests that in times of great upheaval, the distinctions between social classes may diminish.