It's common, I know what it means. It communicated its intent properly, I think. It's surprising to me that a venture capital finance site would need to clarify the difference between value and wealth, and I would be interested in hearing questions about this, but "ELI5" doesn't even meet the basic criteria for being a question. It asks no questions.
Not to mention one could easily search Google for "wealth versus value" and get tons of explanations in a few seconds.
People just like having things handed to them I guess.