Can a speech be a poem?
Generally speaking, poetry is rarely used in speech, because speech is a magnificent art, and the key point is to convince others to support your point of view and be rational; Poetry emphasizes lyricism over sensibility. So poetry is more suitable for lance than speech. Of course, you can also insert poetry into your speech as part of your reasoning. You can find a speech, read it, and then find a poem, read it, so that you can objectively feel the difference between the two styles. Imagine how strange it is to read poetry in the tone of speech.