As I stated in my post that you only partially quoted, Trump has since been asked to clarify if he will accept the results from the election if he loses, and he has refused to give an answer.
And unless you can find a poll (seriously, any poll at all - even if it's Rasmussen) that shows Trump with a lead, then nothing has changed. I don't remember anyone ever saying that Trump "will be dragged out in handcuffs". That is much more in line with Trump's own level of maturity (or lack thereof) from his "Lock her up!" campaign four years ago. It seems like you are projecting just a bit.
Finally, the most recent polls from "Morning Consult" show Biden leading Trump in every state that he needs to win: Pennsylvania, Michigan, Colorado, Nevada, Minnesota, New Mexico, Virginia and Wisconsin... and even leading in some states that he doesn't need to win: North Carolina, Florida, Georgia and Arizona. The only battleground state in which Trump has a lead right now is Ohio. Hell, even Texas and Iowa are close.