Second: Except for free verse, all metrical poems must obey the metrical rules, that is, they must obey the rhyming rules, so the above view is wrong, and I don't agree.
Third, rhyming new poems have become excellent works in various places, emerging one after another. For example, the great Mao Zedong's poems are classics, and he is a great poet that has never been seen before. Therefore, poems that don't rhyme are illegal, and there won't be many excellent works, unless a few works have to sacrifice rhythm in order to obtain the artistic conception in the poem, but there are few excellent works.
Thirdly, the rhyme of poetry is the law of poetic beauty summed up by countless ancestors and ancients for thousands of years. Through the efforts of countless generations of poets and literati, metrical poems have won beautiful literary treasures and laurels. We should respect and learn metrical poems with an open mind. And concentrate on research to improve their ability of poetry appreciation and poetry creation.
Finally, I want to emphasize that excellent poetry must follow the rhythm, that is, rhyme. There are all kinds of famous sayings that have been passed down through the ages. Unless some famous sentences and kind words sacrifice a certain rhyme for the necessary artistic conception, poetry must obey the law. Therefore, from ancient times to the present, most of the classic poems and beautiful words are in harmony with the law. Neo-free poetry, which may or may not rhyme, is beyond the scope of this answer.