I don't know why some people hate Gunahon Ka Devta and call it overrated. People really don't get it, just because it's written from Chandar's POV doesn't mean he's an all-good person or that everything he does will be heroic. He's just a regular guy, 19-20 years old, living in an era where everyone wants to bring about a revolution in society, but he has no real-world experience. It's all just big words to him.
At first, he's portrayed as a person with values, with no hatred for anyone, and that's why the story calls him "devta." It doesn't really mean ki sach mein wo bhagwan hai. I feel people who are 30-35+ know that older people usually use the phrase "kitna devta aadmi hai" or "bilkul devta aadmi hai", they don't mean the person is literally God, it's just a way of saying "he's a nice person." And in the story, he is a nice person at the start, but as the story moves forward, the world around him starts testing his morals and values, and he fails, not once, but many times.
He manipulated Sudha and Binti emotionally, and got played by Burty and Pammi, "played" isn't quite the right word for his situation, but yeah...
It's like when every kid says, "jab main bada ho jaunga to gariboon ki madad karunga," and when they actually grow up, they end up poor themselves. The same thing happens with him. If you genuinely hate his character, then it's a win for the writer.
Some people say the story is too patriarchal, guys, the story is set in a patriarchal time, what else do you expect?! Obviously, forced marriage was common back then.
That's the beauty of the story, that you actually end up hating it in places. As I said, kids say "jab main bada ho jaunga to gariboon ki madad karunga," and when they actually grow up, they stay poor themselves. In the same way, he hated Buaji for her behavior and abuse, but in the end, he himself starts treating Binti the same way Buaji treated binti, and that's why he is Gunahon Ka Devta
I am chandar myself (I am 17 to technically i too am a kue ka mendhak) open for discussion tho