I'm not a fan of the death spiral approach because it's a lose lose deal. It can't end in a good place. When Trump spouts off his stupidity, he's shooting himself in the foot. Better to give him more ammunition and hope his aim improves.
Well, that was the general strategy to defeat him in 2016. ...well, we can't fairly spend our time addressing his clear mental issues because that would be deemed "bias" or unfair by all of his supporters. So maybe better to just air all of his crazytown fascio-speeches and rallies and just let him destroy himself.
I mean, it seems OK on the surface, but the miscalculations piled up: This simply gave him billions of dollars in free media airtime and exposure. Once you reach a certain amount of exposure compared to competitors, there really is no relevance to "positive" or "negative" when looking at the impact of that exposure. As bad as Trump is and as negative a force that he represents, the simple overwhelming presence just outweighed any kind of counterbalance, and that continues to this day.
Further, the media and American in general simply underestimated the number of abjectly racist, inhuman, ignorant pieces of shit that essentially came out of nowhere to support this next-level piece of scum. This is a demographic that, outside of antebellum south, really has never had such a prominent public avatar to represent their core value of plain white supremacy. It doesn't matter if Trump denies this or many of his supporters honestly aren't white supremacists: the avowed and proud white supremacists are exactly that and they expressly condone Trump and champion him as their chosen leader and representative of their core vision of the type of USA that simply doesn't exist. It matters, on any fundamental level, what the actual admitted Nazis of the country think about this man. When Nazis (hell, even those in Europe) champion Trump, that is fucking important.
Trump does not represent general American values in any shape or form. He simply doesn't. Not in his words and especially not in his actions. The only history available of Trump--words and actual actions--is that he is an avowed white supremacist that works to serve his own needs in any way possible, and especially to the detriment of the middle class, especially in and all minority populations. That is the simplest, easiest analysis of his entire history of a very public crook and con man. That is how he operated his secret, non-public family "business." It is specifically why he refuses to allow any public disclosure of his operations as any kind of real corporation or real business (Trump's is not a real business--it is fundamentally a front for money laundering for various international criminals and bankrupt enemy dictatorships) is required to do. Trump guards not so much his wealth as he guards all knowledge related to his wealth. This should tell you or anyone else all you need to know about the kind of criminal he is.