As much as I believe Trump is a terrible human being and now actively trying to break America's superpower status, I still believe his rise to power is a symptom and not itself a cause. The original sin was in not building a society that supports and provides stability for all citizens. That lack of stability and security is what allowed scapegoating and fear-based politics to dominate the nation. And those fear-based politics are what led to the rise of Trump.
Had Trump been sent to prison, I still believe we would be riding into hell on a tsunami of misinformation, hatred, and fear. The wave would just be moving a bit slower. Which, a slower wave gives you more time to prepare and try to change course but I don't think Trump was the epicenter of this thing.