The "exclusive" nature is temporary. When Frontier releases a free update (new bugs, scenery, or QoL fixes), the unlocker breaks. You will either have to wait weeks for a new "exclusive" version or be locked out of your zoo.
Instead of hacking DLCs, use the Planet Zoo Modding Community (via Nexus Mods and the ACSE framework). While mods don't "unlock" official DLCs for free, they add: planet zoo dlc unlocker exclusive
Valve is aggressive about API manipulation. While a DLC unlocker does not always trigger an instant VAC (Valve Anti-Cheat) ban (since Planet Zoo lacks VAC), it can trigger a Steamworks ban. This removes your ability to use the Steam Workshop, trade cards, or play online hybrid modes like Franchise Mode (which validates DLC ownership server-side). The "exclusive" nature is temporary
Most "exclusive" unlockers exploit a long-standing vulnerability in Steam's depots system. The theory is: Note to developers: This is a simplified explanation;
Note to developers: This is a simplified explanation; real DRM bypasses are more complex.