But why isn't this suspect in some form?
Anyone reasonable would presume the machines are tested and get check up type service before their big day. Certainly they don't go from storage to stage without being thoroughly tested.
Next, anyone reasonable would presume there's a know rate of failure and given that data an appropriate number of machines are on-hand as back ups *so that the integrity of the process is maintained.*
Maybe there is no conspiracy per se but someone / something failed. I'm tired of the "omg the conspiracy theories..." trope being front and center (read: a distraction) when there are legit questions to be asked and answered.
Unless failure arw mitigated and when possible prevented, there are going to be theories, conspiracy or otherwise.