Poor management and yes man working culture. If you are the person who always brave to speak out, you might be not being tolerance by them. No clear boundary about the job scope, will need to cover the job of other department.
The leaders in the factory are toxic. Sometimes they yell when they can do anything they can. Even some female employees have begun to have this kind of work attitude. Turnover is very high.
As long as the company says you don't meet the job skills, it will force you out, even as a senior employee.