> It's unproductive to discuss such matters with a total layman who didn't bother to do even a basic research, but ok, I will play along.

I will play along too. It will be very surprising to me if you are an actual industry insider.

You have not addressed the loss of coolant.

> Let's start from the simplest thing: a Chernobyl-like event is impossible on PWR because they do not use graphite moderators. Simple, right? I could've finished on this, but let me educated you a bit more. Modern reactors have the following safety systems in place (it's not a full list):

Power excursion is very well possible on PWRs during rapid coolant/pressure loss, especially with very fresh, or very old fuel.

Positive scram is possible on PWRs too under condition when rods/poison rapidly reduce coolant temperatures.

Boron injection will not work if your coolant went supercritical.

Catalytic hydrogen recombiners can help with gradual hydrogen release, but would be of no use if you are hit with sudden release.

Passive heat sinks will not do anything if you reactor already lost big part of its coolant. Etc, etc.