Rhyme is not for learning, but for reading happily. Of course, it cannot be said that unqualified laws are not good, and qualified laws are easy to write and read. There are also many good poems in ancient poetry, which are juxtaposed with modern poetry.
As for modern poetry, the mainstream has gone astray, taking mystification as its function, forming that what the subject says is more difficult to understand than ancient poetry.
A good poem, regardless of its poetic form (old style or new style), must be easy to understand. Understand the original meaning and have a long aftertaste, which is a good poem. If the original intention is not clear, it must not be a good poem. It is also possible for the ancients to write obscure poems, such as Li Shangyin, but the original intention of his poems is easy to understand, but there are ambiguities or puns in the extended meaning, which has a unique aesthetic feeling.
Lu Xun said that some people like to make themselves into a rotten quagmire, so that people can't see the depth (in fact, it is a superficial embodiment). This is the most appropriate way to describe the mainstream poets of modern poetry. As for "why is modern poetry just spinning around in the same place and not sought after by the general public?" It should be those who deliberately control the poetry world, and only by using some vague rules can they do this. Otherwise, the rules are clear to everyone, and everyone can write as much as they can. What else can they manipulate?