Question

آنها از یک دیدگاه به موضوع نگاه میکنند

( منظور اینه که جوانب مختلف رو درنظر نمیگیرن....یک سویه به قضیه نگاه میکنن)

Answer 1

Their attitude to the issue is quite reductive.

They are looking at only one aspect/dimention/facet of the issue.

Answer 2

 They consider only one aspect of the issue.(They don't consider all aspects of  the issue).