You mention in the comments here that you realize poetry is subjective. Why then do you aim to declare other people's work invalid?

I will say that I am pretty picky about poetry myself. In fact, I don't like that E.E. Cummings' poem you linked. However, I do like his poem that begins with "Who knows if the moon's a balloon..." That is because I like the elements he uses in the second poem, such as repetition, internal rhymes, alliteration, and similar vowel and consonant sounds thrown together to make the poem more melodious. But you see, that's my style. I wouldn't ask people to have the same opinion as me.

Some people value the emotion behind poetry and this can be seen in even the cliche poems with forced rhymes that are written by some teenagers. Those poems can be as meaningful to someone as a well-written sonnet with old English language. Someone can come across that "bad" poem and say, "I relate."

I don't think many people write poetry with the aim to make money. (It's a very difficult thing to do.) Thus, it's an art form for people to express themselves in whatever way that means something to them (whether that's in free verse, with a strict rhyme structure, with a lack of structural conformity like E.E. Cummings, or with blatant typos). Don't be so quick to discount people's writing.