is this a joke? Wikipedia volunteers are also middle or upper class in most cases, they aren't editing Wikipedia as a means to their survival, they just like doing it. The comparison to Marxism is unhinged.
Good for Wikipedia. Try growing up in the 1970s when if you didn't know something, you just never knew it, unless it happened to be something the local library might have buried in a microfische somewhere and you had six hours to kill.
Not sure what you mean by "upper class". The kind of people that term refers to for me, is a group of people that would never lower themselves to donating labour for nothing, and on the whole aren't sufficiently well-educated to even read a Wikipedia article.
I agree the comparison to Marxism is unhinged!
for the US, it refers to income above $156K, here's an explainer
https://money.usnews.com/money/personal-finance/family-finan...
It's not a question of "politeness" - the upper classes curse like troopers, and generally can be very coarse. It's just a particular kind of manners, that they recognize. It's not a question of wealth, and certainly not a matter of exceeding some annual income threshold. Many people that would be considered upper class are not very rich, and most very rich people certainly aren't considered upper class.
Really, the UK upper class is defined by blood - who your mum and dad were. That affects where you go to school, which determines what manners you learn (and might influence how much you get to earn).