Why do you think Yexiu/Yeqiu was kicked off his original team? From what I got from the drama, he was a highly skilled member of the team and he was a bankable player. Leave your comments down below what you think the reasons are. 

He also didn't show himself in publick and didn't do interwiews. that caused him being kicked off the team. He wasnt profitable. It's a novel you can read ahead if you like.

A gaming team (Esport Team) is a business. Even if he is skilled if the team deems a player unprofitable then the player will get kicked.

There were some reasons of why Ye Xiu (a.ka. Ye Qiu) was forced to retire :

1. Ye Xiu hid his identity (always wearing black face mask) because he used Ye Qiu ID to play. (in drama and novel)

2. Because of the first reason, he avoided publicity, including pers conference, advertizing, public sponsorship that required solo show. etc, which for the company that invested to JiaShi the biggest turning off of the benefit (ie.money). Remember that the cost of daily life, training, computers and gadgets, ransom, cars, flights, hotels and accomodation  for the team when entering events or competitions were all handled by Jiashi. So if the expenditure was more than the income, that was really bad for the company finance balance. (in drama and novel)

3. Actually team Jiashi under Ye Xiu (a.ka Ye Qiu / One Autumn Leaf) only winning in season 1-3 of Pro Alliance League. JiaShi suffered four consecutive losses in season 4-7 because of many bad members (bad in attitude) which Ye Xiu was difficult to handle. In Season 8, Ye Xiu was forced to retire ( in novel).

Hope this help