Correct.

Anger can be very productive, when controlled, channeled, used as fuel for justified, reasoned and motivated action... or even, can compel you to act decisively when stakes are extremely high and full thoughtful consideration will waste time and lead to harm.

Anger also can be uncontrolled, unrestrained, and broadly destructive, and can compel poorly thought out knee jerk responses to misunderstood situations.

Its nuanced. Its complex.

A blanket 'ick' at the concept of anger is a sign a person is laughably priveleged and inexperienced, coddled, either that or basically brainwashed, maybe both.

It is entirely normal to be angry sometimes.

Learning how to understand and control your own anger literally is a significant part of maturity, becoming a mature person.

And yes, you are totally right; anger, other emotions, feelings, are... just things that happen to humans, experiences they have, given certain situations, certain stimuli.

They don't need to do anything, other than be experienced.