Because the pillar of the general is empty, empty as the name suggests, failure and even death. Every time you die, the smallest effect will also reduce the original effect of that column by half. If that column is empty and important, the effect will be even more powerful.
As a result, stars are useful and often useless. Generally speaking, the effect of fuses iconic images is mostly positive, especially when fuses iconic images are needed. It is a pity to die in the air.