[Symmetry]

The bit about "The water tanks in the reactor were full, and the uranium fuel rods were at risk of melting through the water tanks, potentially releasing a force equivalent to a multi-megaton nuclear device and devastating much of Europe with radiation." is sort of complex to judge.

It is absolutely true that that scenario was impossible and couldn't actually happen. But as far as we can tell (documented in Voices of Chernobyl) someone at a similar meeting to the one portrayed in the TV show did really say that that could happen as portrayed in the TV show. But of course the audience is going to assume that things scientists say in shows like this are accurate.

[osm3000]

That is a very good point

My angle was: HBO series said Legasov's position was something that was by far not true