It is pretty clear from the beginning, due to the time this book was written and the storyline, that this book is a single metaphor thematisizing WW2, especially the russian side (communism, UDSSR). However I did really enjoy reading it and symphazising with some of the animals on the farm. 
Of course you can never compare a classic like this to modern literature and I never will. I think classics should always be viewed and reviewed in context of the time they were written in. 
And for the 1940s George Orwell did really create a lovely book adressing and discussing some struggles and problems faced during the time of WW2. Through which the readers are fronted with current problems in a beautiffuly written and tragic story about a small farm rebelling against the rest of the world.