However, we are not sure that this is his only reason. In sports, it is very common for players to quit the game because of injury. Besides injuries, there may be other factors that led him to choose to quit UFC. These factors may include his personal health, career development goals, contract terms, etc.
In addition, MMA is a high-intensity sport, and players need to have high physical fitness and skills. Players' career is very short, so they need to exert their potential as much as possible in a limited time. Therefore, they may adjust according to their own situation and goals and choose a development path that is more suitable for them.
Generally speaking, although we can't determine the exact reason why Luo Tang didn't play UFC, it is certain that injury may be one of the important factors. At the same time, there may be other reasons that led him to make this decision.