I do sometimes feel the need to question choices but ultimately the owner doesn't ever need my approval or agreement on their plan.
I too tend to poke and prod and ask questions about other folks builds and plans.
The replies then provide more info on the project, and occasionally brings up ideas and problems they may not have considered or thought of.
Even if I don't personally like or agree with the whole project or idea by learning more about it I'm sure to learn something to help with my truck.
Grigg