i don't know the poet articles you speak of so i don't know what might be different with them but the rule as i understand it is that poetry should be quoted only as an integrated part of the article's discussion for example it is not sufficient to say here is a poem by bhupi sherchan but it might be appropriate to say one of the characteristics of bhupi sherchan's style is such and such as can be seen in these verses from poem there was also another consideration which i didn't mention in my edit reason because i thought perhaps it was too obvious this is the english language wikipedia and there is an expectation that english language readers can read any article without missing something because it's in another language that doesn't necessarily mean you can't quote from another language at all but if you do it should be accompanied by a suitable translation into english