deskill

verb
1
to reduce the amount of skill that is needed to do a particular job
مهارت‌زدایی کردن, بی‌مهارت‌سازی
2
to make the skills of a worker out of date
بی‌مهارت کردن, از مهارت انداختن, مهارت‌زدایی
They have lost confidence and become deskilled.