Not at all.
You can sign a client representation agreement with a real estate brokerage, amend it to suit your needs, or decline to sign. Signing protects your interests: the agreement includes start and expiry dates, services or promises the brokerage makes to you, their commission amount, and anything else you agree to. Without a signed representation agreement, a brokerage may take you on as a customer instead.
Let’s break it down. A brokerage is legally obligated to provide clients with a written representation agreement. Accepting it gives the brokerage a fiduciary (financial) duty to discover and disclose material facts about properties you are considering, like any defects they know about or the seller discloses. Signing a customer agreement instead limits the brokerage’s, and your real estate agent’s, responsibilities to you.
To demonstrate the difference, brokerages are obligated to pass on all offers they receive to clients. Not so to customers, who receive only those identified in their much more basic customer agreement. That may be no offers at all.
If you decide to forego any agreement at all, get commission arrangements and deadlines in writing when you make or accept offers to purchase land or homes.