It states in the article that guy is "an arborist and research assistant with the South East Asia Rainforest Research Partnership." Angiosperm is a word most of non-arborists and research assistants have come across, even if we don't know precisely what it means. Were you really surprised that a professional in a particular field knew the basic jargon of said field?
Here is a definition of arborist if you are interested.
"An arborist, tree surgeon, or (less commonly) arboriculturist, is a professional in the practice of arboriculture, which is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture. "
Also, what privilege are you ashamed of exactly? That type of self-flagellating virtue signaling is very toxic for your well-being and the people around you. I hope you are aware of that.
I didn't read the article carefully at first and missed that part. Sorry, I'll add that my list of character flaws. Thanks for all the expertise you offered here.
Here is a definition of arborist if you are interested.
"An arborist, tree surgeon, or (less commonly) arboriculturist, is a professional in the practice of arboriculture, which is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture. "
https://en.wikipedia.org/wiki/Arborist
Also, what privilege are you ashamed of exactly? That type of self-flagellating virtue signaling is very toxic for your well-being and the people around you. I hope you are aware of that.