I can totally understand your plight. You won't believe I have written that (New to Upwork but experienced in the field) in a couple of my proposals. My profile also refers to it in a subtle way. I thought of adding it because I feel clients filter proposals only on the basis of the amount earned by the freelancer till now or basis the rating a freelancer has. If this is the usual case how will we fetch any work? a newcomer shall always remain a newcomer with this practice.
Let us hope the Gods controlling Upwork answer our prayers and we are blessed with more work. Ha Ha!