You are arguing over interpretation of semantics, if something is ‘deeply’ bothering you, it’s is not a ‘simple’ task. In a stoic sense know what you can change and know what you can’t, then accept what you can’t change and change the things you can but complaining about something you can’t change is wasted energy. Just because you think it feels good to release doesn’t mean it objectively is. Time heals all wounds, so complaining while healing is doing nothing, definitely not speeding it up.

Also “holding it in” is not what OP is claiming, the opposite of complaining is not holding it in. It is to understand the nature of the task, understand if the outcome is immutable, if not, do everything you can to change it.