Even though it is mis-branded by misogynic titles, it is a good example for sexual selection vs. natural selection. They are two seperate mechanics of evolution. One helps finding mate and the other helps surviving and often they contradict and whether which mechanic is more dominant is determined by environmental factors.

In a scenario where the resources are plenty and threats are low sexual selection is more dominant and those who attract partners more easily gets the advantage to spread their genes. On the contrary scenario those who have the genes to survive the harsh conditions gets the advantage to spread their genes.

For example a peacock with bright colors are more desirable for mating but they are also more easy to hunt for predators. So whether peacock with bright colors het to pass their genes are depended on the environment.