It isn't a matter of keeping people happy. It's that 'facts' and 'truth' aren't as obvious and straightforward as people believe.

Take something as innocuous as calculus. Who discovered it? British say newton did. The germans credit leibniz. What should the editors do? Flip a coin. Credit both? Credit neither since neither discovered the concept of 'the limit'.

It's like this but far worse for many topics.

Everything seems simple because we lived in our own national propaganda ecosystem. But with the internet, wikipedia must try to pick 'truths' out of many 'truths'.