Take a look at the administration's first term and all the involvement and ties (financial, political, etc.) there are to Russia (and Russian-related objectives like Ukraine). It sounds bonkers, but the more you dig in and see how closely tied the relationships have been, and then see how totally soft Trump has been towards Putin/Russia - including direct actions towards Ukraine like removing the long-term diplomats, stopping weapons sales and aid, and recently killing USAID (whose #1 beneficiary was Ukraine) - it all coalesces into a single coherent view.

https://en.wikipedia.org/wiki/Links_between_Trump_associates...

just purely as a thought experiment and devil's advocacy: to create new avenues of growth and control for the oligarchy. The fall of the Soviet Union, for example, turned out to be a boon for them and they were able to replace the politburo with their own fiefdoms. By destroying the US goverment functions they will be able to privatize the profits (for their companies) and socialize the costs (pollution and shitty water) for the rest of the population. The price of clean water will go up and the people that can afford it will buy whatever anti-PFAS tech they're selling (providing growth for their companies), and the poor well...who cares. They will obtain greater leverage with the US government because they will be seen as saviors since the government will have no competent agencies left, including the military. And the government will helplessly cede more and more power over to them.

I think it's a combination of things.

Some people are genuine psychopaths who derive satisfaction from destroying things or by hurting people who don't want them to destroy things.

Others are driven to destroy because they believe that there's some sort of higher purpose to this destruction, either religious or political in nature.