I feel, seeing some of the voting and the justification being given, that I might perhaps chime in with this.
Not all voting options are necessarily equal.
Options can be presented which are, while in character for the orks, also a bad choice in the long term goal of "getting to space so you can punch the stars". Options can be presented whch weaken existing strengths of the tribe, which handicap it or rupture it, or which lose you access to traits or advantages.
No single option will result in a "Game Over", but it is possible to shape the development of the tribe in a way which harms it in the long term - and it goes doubly so if the update warns that something bad will happen if a certain choice is made. Such as, in the case, of the vote of whether to have a "Big Ork", the vote warns that if the tribe rejects such a thing, one or both of the candidates may leave and take their boys with them. Which will lessen the tribe, lose a chunk of its grabbas (undoing the vote to get more grotz), and risk creating a rival tribe.
I'm not going to deny you the right to make orkishly bad decisions, but I'm also not going to shield you from those bad decisions biting you, especially when I warned about consequences.
In the long term - since this is becoming an Informational post - it is possible that the tribe wind up in a situation where it is either subjugated by other ork tribes and has to exist as a vassal and continue from there-on in, or - especially later game when the stakes have escalated - it's simply destroyed. It should be clear from context when such situations are at hand, but they can occur. Vassalisation isn't the end of the game, but obviously losing sufficiently badly against the Imperials resident on this world might be.
It is possible to lose this quest - not easily, and not out of the blue (you're not going to suddenly get a Deathwatch kill team dropped on you), but success is not guaranteed.
