Maybe. but existance of leaders like Gerhard Schröder displays a different story.

(he is sitting on russian gas companies’ boards, after heavily going against nuclear). No shit the leaders failed the country for their own gains, seems like.

Be careful. Incompetence is an almost infinite sink for blame, and it's easy to misattributed to it what really belongs somewhere else.

Incompetence doesn't have a bias. Malice does.

More to the point, Hanlon's Razor is usually an excuse to do nothing, which is a mistake.

It's better to assume that people intend the likely outcome of their actions. If they want to claim stupidity/incompetence as a defene, that's on them.