No one celebrates the mistakes ... what an absurd strawman (qsera's). Rather we celebrate the scientific method that finds and corrects mistakes, as you say.
So much for celebration!
Sure this "Muon mystery" that no one cares about financially could be corrected without much effort. May be you should praise the gods of economics to make changes that are in the best interests of humanity possible..
It's in the nature of being humans. Or God created the universe and one is God and knows exactly how everything works. No wrong beliefs but please teach us.
Sure, it would have been much worse if only a select few had the privilege. Like if the king "funded" only those who said/stamped the things the king wanted as "scientific"...