There are countless resources to find this stuff out. To be clear there may not be a level at which common people understand why e.g. Fission Chain Reactions are dangerous but they can grok why a giant bomb that spreads radiation is bad.
For Starters: https://www.lesswrong.com/posts/uMQ3cqWDPHhjtiesc/agi-ruin-a...
>The public have all heard “AI is going to destroy humanity” but those statements have been short on specifics.
You can no more explain how Stockfish is going to beat you at chess then you can predict how an AGI would defeat humanity. Nevertheless the outcome is nearly certain.