Chernobyl wasn't a bigger problem because of the personal sacrifice of the thousands of liquidators that cleaned it up. I strongly recommend watching "Chernobyl 3828"[1], a short (~30min) documentary about that cleanup, by people that were involved in it.
> The potential here is frightening
Which is why the danger - even at Chernobyl - is usually severely overstated. I'm not saying the situation at Chernobyl wasn't a huge problem (see [1]). It just wasn't the insane danger that many believe it to be. For example, many of the liquidators involved in the cleanup are still alive, fighting Russian bureaucracy for the healthcare coverage they were promised in the Soviet era. Cancer is a long term consequence of working as a "bio robot", but modern medicine is making that increasingly survivable.
Fear tends to suppress rationality, so remember to stick to the facts, and remember that reputable sources can be hard to find for any topic.