Who is the most likely to make leaders dissatisfied in the workplace?

Taurus boys are most likely to make leaders dissatisfied in the workplace, which I think is related to Taurus' personality.

My brother is a Taurus boy. He is a high flyers who graduated from a famous university. After graduation, he worked in a foreign company. At first, he was quite comfortable and got along well with his leading colleagues. But gradually, the leader began to dislike him less and less. The main reason for this phenomenon is that my brother has a strong working ability and speaks very straight. When he gets along with others, he never considers other people's feelings. Many colleagues have reflected this problem to the leaders.

In order to make colleagues live in harmony, the leader had a profound conversation with his brother in private. My brother is very dissatisfied. He felt that everything he said was right and there was no need to correct it. As he spoke, he quarreled with the leader. The leader was angry and his brother was a bit arrogant. I hope my brother can correct his shortcomings in the future, otherwise he will really suffer in the workplace.