I love these one-person crusades against present reality. Words mean whatever a critical mass of people want them to mean. For example, the usage of the present tense here: "Composed of" and "consists of" are better alternatives. is incorrect. It should read: Composed of" and "consists of" were better alternatives. This thread is literally a clout ATM machine for a group comprised of pedants.
The problem here is the ambiguity. Someone who uses the original meaning of comprise will interpret a sentence in the opposite way of someone using the new. "America comprises many states and territories" -> "Many states and territories are comprised of America" have the same meaning with the original definition. With the new definition, you'd have to invert both sentences. This is called a Janus word because it can…
I'm not so sure. Google ngrams has the new usage recently taking over in published books[0], and those usually learn conservative in their usage.
[0] https://books.google.com/ngrams/graph?content=%22comprised+o... (this works because ~no one uses comprise in the passive voice in the old meaning)