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The flaws in the RBMKs which were known before Chernobyl were fixed afterwards (with changes that had been proposed before Chernobyl) in the other reactors that were kept running, though. Not claiming that the RBMKs were flawless after the fact, but the specific flaw that led to the disaster was fixed.

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> The flaws in the RBMKs which were known before Chernobyl were fixed afterwards

Indeed, and it shows that the design wasn't flawed to the point of condemning it: a fix was possible. Implication: even a non-major flaw can trigger a disaster.

> (with changes that had been proposed before Chernobyl)

Indeed, and it shows that even detected problems sometimes aren't fixed. This is not reserved to the USSR: Fukushima also showed it (it was well-known that the seawall/levee wasn't high enough, as recalled in my previous post here the nearby Onagawa plant had an adequate levee).

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