You may very well be right. Successfully storming the Capitol and murdering Nancy Pelosi wouldn't have overturned the election, merely taken the conflict up a level to an undeniable coup attempt. What would happen then, God knows, and it could get very nasty indeed, but I think it's unlikely that Trump (or any attempted coup by anyone) would have had enough military support to pull it off. And had it failed, he'd be in Very Deep Sh!t, with not a shred of plausible deniability left.