We've seen spider, fox, ant and slime. And now the author present you with his creative way of writing, a snake reincarnation!
I say, who tf care about a little problem of grammar. I for one don't come for a novel to learn language. As long the words reaches me, the world is there, the character is there. So this novel did well sketching interests.
I recommend you this novel, to follow an adventure that you wouldn't have in real sad life.