This is clickbait. Much of what is presented as evidence of how bad native English speakers are would apply to people of other languages if they were the nativ

This is clickbait. Much of what is presented as evidence of how bad native English speakers are would apply to people of other languages if they were the natives and English speakers were the guests. But with respect to the one word financial loss, it sounds like the receiver is ultimately to blame because they chose to act without confirming the meaning of the original message. Sure, the writer could have considered the ambiguity and been more specific or explicit, but the receiver made a choice and ran with it.