I think the opposite. Trump lingering in ill health until January is what I’m hoping for. If he’s quite ill, but remains in office and remains on the ticket, it keeps his stupidity and mishandling of COVID front and center, and it keeps the Republican campaign and strategy in uncertainty and disarray with nowhere really to go. I think it’s a certainty he loses. And it makes it somewhat less likely that he’ll have the energy or inclination to cause harm to the country - either through meddling in the election results, or through causing petulant harm as a lame duck.
If he dies quickly, or is so gets so ill that he is quickly replaced on the ticket, we have Pence (or conceivably Romney), and still a month to go. They are still likely to lose at the top of the ticket, but it’s much more out of left field, so I feel there’s more uncertainty there.