Well I suggest reading carefully that first paragraph from Wikipedia. It does agree with me but I'll give you that it says it can be context dependent and you are talking about what it is considered "to be wealthy". In that context, I think if you considered the average person a hundred years ago to a average person today, the person today would be considered wealthy (to the person from a hundred years ago).
But to quote the first sentence of the second paragraph
> At the most general level, economists may define wealth as "anything of value"
Which is why Saudi Arabia is "wealthy", because they are rich in oil resources.
> Resources however is not a zero-sum game.
Great, we're done here, right? We agree?
To a person with access to clean water, having access to clean water does not make one wealthy. To someone that doesn't it does. But this is the difference between the economic term of wealth and the colloquial term of "to be wealthy". (Though we can say that all westerners are wealthy if we take the right perspective, but I won't get into that).
I actually will get into that. You're taking this from a western-centric point of view. Not only that, a temporally local point of view. I'll ask you to reread my original comment now that there is added context given. Specifically that laid out in this paragraph. I'm not talking about money. The value of money is a result of the economy, not the other way around. You're conflating things that don't interact that way.
Honestly I don't even understand your point. Because I'm saying things like "We have AC and good medicine. Our ancestors a thousand years ago had neither. Ipso facto, we're more wealthy". I have absolutely no idea why people with expensive things discredits this argument. I'd even argue that while off topic, if anything it helps mine. Because previously only monarchs had that kind of wealth, now we have almost 15 million millionaires in America alone. That's like the global population of 5000 years ago. You can also find my link to the world bank that shows the number of people living in extreme poverty (globally!) has been plummeting. These are the kinds of things I'm talking about. Not that some rich person has a nicer house than you. But that there has been a trend where everyone everywhere is doing better than they were before (given the time scale).