Here's a big dog that isn't barking: I've been saying in public since the election that the design of our system doesn't just ALLOW potential fraud, it GUARANTEES it. By design. Because it is both feasible (we have learned) and the potential gain is enormous.
Under those conditions, a reasonable person with even modest experience in life understands that massive fraud HAD to have happened. You don't need to observe it to know it with certainty.
By analogy, if I drop ice cream on a hot sidewalk in summer, I don't need to stay and observe it to know it melted. I can walk away and be equally certain. Our election system (all of it) is like that ice cream. Don't tell me I have to show you proof it melted. It melted.
I have made that argument multiple times in public. The dog not barking is that not one Democrat even pushes back on my point. They know the ice cream melted too. But they also know it's smarter for their team to demand proof than to accept the obvious.