Earlier quoted context omitted.
Similarly, there is a vegetable known as the heart-of-the-palm, or otherwise known as millionaire's cabbage, which can be harvested from a fully grown coconut tree, but which will kill the tree once harvested.
"Millionaire's cabbage?" That's funny. Go to Brazil, heart-of-palm is in basically every salad bar anywhere, as common as lettuce and tomatoes. Just a normal and normal-priced vegetable, very mild flavor. A lot of vegetables kill the plant that produces them... and the heart-of-palm that is canned and sold is produced from farmed palms that aren't coconut palms. https://en.wikipedia.org/wiki/Heart_of_palm
Millionaire's cabbage seems to refer to Millionaire's salad which seems to be specific to the use of Deckenia nobilis, which are a protected species due to illegal over-harvesting. So the assertion that the term "millionaires cabbage" is funny because heart of palm is common in brazil seems disingenuous.