Not only does the theft benefit your board state, but it buffs your creatures, too, since it will trigger their prowess
Incapsula incident ID: 1553000690298904829-612160765382693201
[4] Different terrains (such as normal, forest, meadow, dark, sea, wasteland, mountain, toon, crush, and labyrinth) can increase or decrease different types of monsters' attack and defence by 500 points, as well as increase each character's movement space
The downside of him being Level 6 is easily mitigated either through its own effect to drop it to Level 4 while in the hand by discarding another Cyberse monster, or by Special Summoning it from the hand via the effect of either Code Talker Inverted or Firewall Dragon itself
Goblins does a bit but not enough to really make this any sort of mainstay