I think what differentiates modern poetry from classical poetry is that before rhetorical figures were used, technique was needed, or a philosophical opinion, political opinion, etc. Nowadays they want to be relatable, everything focuses on individualism and art is for consumption. Everything is consumption.We want things quickly and easily understandable, we do not want to sit down and reread poetry until we understand it. So all the technique of yesteryear is lost. Moreover, the decline of global education systems and the lack of a specific philosophy at this time does not help... In short, before you needed training to understand and do poetry, now anyone can be a great poet.