Very cool! I didn't know this about Poe. But that's hardly a critique or a lecture by Poe, is it? It seems to be a sketch of a kind Mark Twain could have done as well (coincidentally, I adore Mark Twain).
I'm not nitpicking, by the way, just enjoying the piece you shared.
In American society you could point at Edgar Allen Poe as someone who is only known for his fiction and poems, but who was a prolific critic in his day. He likely made more money as a lecturer than as a fiction writer in his later years. This has been researched a bit but sadly there are few texts that survive of those lectures, just newspaper opinions and advertisements about the lectures.
This one is one my personal favorites from the ones that weren't lost...
https://www.eapoe.org/works/mabbott/tom2t038.htm