Launch button on 'Construction Basics' training

[Mast]

In the first training (Construction Basics), you're taught how to build a rocket. When you finish the training, the instructor tells you to use the exit button to leave the VAB.

Now, if we all would be smart enough to follow his instructions I wouldn't be typing this. What happens if you hit the launch button instead:

Which is very fancy bulls***. Why isn't the launch button greyed out?

[Tuareg]

its jeb's fault, he was messing with the controls

[Norpo]

Man, you can never have a button without someone pressing it.