Complaint and Action Are Not the Same Thing
Complaint can contain important information. Something hurts. A system is failing. An agreement was broken. A condition should change. Silencing complaint would discard that information.
The distinction is not between complaining and being positive. It is between naming what is wrong and doing something with what has been named.
Complaint can become repetitive without becoming more precise. It can keep attention fixed on the gap between reality and what we think reality should be while leaving the next action undefined. Constructive criticism moves differently.
What specifically is not working? Who has authority to change it? What evidence supports the claim? What request, proposal, boundary, repair, or experiment follows?
Acceptance of the current fact does not mean approval of it. It means action begins from the situation that actually exists rather than from the demand that it should already be different. Complaint can reveal the problem. Action begins when the problem becomes specific enough to respond to.