This is very true. It doesn't lead to PIP always but whole amazonian culture makes it difficult for the person to stay in team/company. Writing COE is kind of

This is very true. It doesn't lead to PIP always but whole amazonian culture makes it difficult for the person to stay in team/company. Writing COE is kind of admission of guilt and I have definitely seen promotions getting delayed. During perf-review, lot of times managers of other teams raise COE has a point against the person going for promotion.