Answer:
In my opinion, I agree with his statement. He made sure to say all "GOOD" poetry is that, and some people have different opinions on what good poetry is. Next, I do not know what poems you read but recently I came across one of Wordsworth's poems called, "I wandered as lonely as a cloud". After reading it I could agree that it fits his definition of good poetry. This is because he is using romanticism to connect with nature and he is explaining a beautiful moment. He says, "And then my heart with pleasure fills, and dances with the daffodils. This is saying that his heart is with nature and I believe that the quote is, "a spontaneous overflow of powerful feeling".
Hope that helped. Have a good day :)