https://kyivindependent.com/elon-musk-publicly-supports-call-for-us-to-exit-nato-un/
In case some people are not aware, Elon has expressed the desire for the US to exit NATO/The UN. On another hand, the former NATO commander, James Stravidis anticipates the dismantling of NATO.
As Elon is a an US official now(if you can call it this way) it might not be a fantasy for this man to influence Trump's actions.