Well, according to this article it was a Norwegian delegation who wanted the race shortened. They even pushed for the race being shortened to 15k.
https://www.sports.ru/skiing/110698...sili-sokratit-distancziyu-marafona-do-15.html
And as Bavarianrider said, the Norwegian newspaper Dagbladet wrote similar things.
And about your claim that Røthe was the only Norwegian who explicity said he was happy about the decision:
As said before in the thread, Klaebo openly said the he would have watched the race on TV if it was 50k, but decided to give it a go when it was shortened. At least in Norwegian media, it was a lot of concerns with Krüger and how he would have stamina for the 50k returning from Covid. Especially when looking on how affected Riiber was in the Nordic combined events. And btw, even Holund expressed after the race, that considering how tough it was, he was happy with the changed distance. So who's left among the Norwegians who weren't happy? Where is the conspiracy theory?
But I do agree, this was a complete s**t show, and the evidence points strongly to who the driving force was.