Good old themes, always coming back.. The discussion around the 'Waiting Game' is always the same and there are always the same conclusions:
If you go first and wipe the board with ease you force your enemy, if he screws up only once he's done. If you go first and screw up yourself your enemy can take an advantage from it, he don't need to clear the board but just need to have more banners. In addition the one who waits can run out of time for whatever reason. That's it.
There's nothing unfair with waiting, it's simply a strategy and can either work for or against you. It's up to you and RNGesus how it will end.