People are taking the wrong takeaway from the show. The point of Chernobyl(HBO) was not to show the dangers of Nuclear reactors, It was to show, The Lies, Politics and other disgusting elements can and will ruin lives of thousands of people.
Chernobyl was the result of lies and deception. Soviet Russia's wanted to be number 1 everywhere while completely disregarding how they got there, That is what led to Chernobyl.
People, Including the Doctor have taken it incorrectly in my humble opinion.
They even had a separate podcast where they discussed exactly this and more details related to the series in great detail. Look it up on Pocketcast or whatever app you use to listen to podcasts and you'll find it.