At the very very very least even if no fraud will occur under dark of night, the mere act of stopping counting makes the inevitable DJT win look less massive and obvious to the dimwit voters and rioters out there. The less it looks like a major victory the more easily they can be manipulated into looting and violence. Again this is the VERY least of their intentions.
In a much younger life, I worked in concrete. I was a concrete finisher. You "poured" the concrete. Leveled it, and started troweling a finish on it. On a hot day, it became hard very quickly. There were no lunch breaks. There were no.."we'll come back tomorrows". You worked your ass off because there was no second chances.
Coming back tomorrow is bull stuffings. Americans are entitled to results. And if you have to work until 3:00 am, you work until 3:00 am. It should have been clear that this was your responsibility when you signed on to the gig.