Why would you believe that?
I think it has to do more with his methods than a lack of understandiing!
Right now he is losing for this fall.
So, if he is going to lose, one of his "best" (if you are a sociopath) approaches is to
1) do everything you can to make the upcoming election suspect - raise concerns over mail-in ballots (which are sure to be at record levels, given the virus) and do nothing (or a bare minimum) to reduce the level of foreign interference in the elections.
2) Shore up the most extreme members of his base who will then cling to "rigged" election like a dog with a bone!
Remember, even though he won, he still made lots of noise about the 2016 election being rigged. I think it was because he did not expect to win and had this narrative so entrenched he decided to still use it. For him, it is all about not losing face (remember marketing and image are dominate factors in his history). He can't accomplish that is a legitimate and straight-forward way, so he does it by coming up with viable stories about how the deep state is attempting to ruin him, but he is like Rambo going against the corrupt government! It is a story that much of his base just eats up!
I, personally believe he'd be delighted if members of his base pick up arms in protest of how the election was rigged. Hopefully that is not what might happen, but if he can keep the hard-core militant portion of his Rascist/KKK/Neo-nazi supports wound up, it could happen!
Notice how he never speaks out directly against them, just like he seems to have no concern over the Russians putting a bounty on American soldiers' heads (even if you give him the benefit of believing that he was not aware of this, it makes no sense that he is not addressing it). If you are helping him in any way, regardless of your ethics, he is going to keep you in business as best he can!