If people believe that incompetence is one of the reasons why this went down then there is no need to add a secondary reason.
I don't understand why folks can't see that it does not take much for shit to hit the fan due to negligence.
How many stories do we see with kids getting access to guns that were not properly stored or secured and accidently shooting and killing themselves? We see that shit all the time. Terrible situations, but you don't see people looking for conspiracies. If anything, the majority of people who see those stories immediately focus on the negligence of the parents and adults involved in the situation.
How is this any different? There was negligence involved with he personnel task with securing this event and the main asset which was Donald Trump. It really doesn't have to be much deeper than that.
If you leave a loaded gun under a bed and a small child gets their hands on it, you aren't going to twist yourself in knots wondering why the worst possible outcome happened. I think you would have a very clear understanding on what happened in that situation. Or are you going to run with theories about the government secretly targeting the adult in the house and getting the kid killed as collateral? You wouldn't do no stupid shit like that and if you do, then what type of person are you?