They might be influenced by Russia politics, of course, but Netherlands, as part of Europe, definitely follows anti-Russian politics as well.
As a person who lives in an ex-Soviet country, which is not Russia, many who have not seen Soviet/Russian reality distortion field (aka political lies) can be too naive to believe them.
Russia, when it's convenient to them likes to exploit western liberalism and naivety. Like here, they (Russian) say that their experts, who know best in the world how BUK missile launcher system works in every aspect, concluded, that Russia did not do it.
Though, I believe that Russia's underground political tactics have not much change from the times of KGB. Possibly, those Russian experts were made (by government agencies) to 'investigate' and produce 'report'. Also do not ignore the fact, that Russians gave their report at the same time as Dutch report was released. The goal was, that the people would see Russian 'report' instead of the Dutch one. The 'dictatorship' cannot let people doubt that they do not have a enemies in the west.
Almaz-Antey is 100% owned by the Russian federation. The state is also their biggest customer, and nearly 90% of the business is with the military. Almaz-Antey produces very high priority strategic systems, like air and missile defenses.