People hated her because they blamed her for LP not being together, plain and simple. I don't get why people hated her so much when they claimed to have known she was going to go away fast anyways, like what's the point? That would be like if I despised Anna in season 2 even though I knew that BL were going to come together. I agree that Lindsay's fate was obvious, but I just don't get why people couldn't just suck it up.
Personally I felt bad for Lindsay. It was obvious she cared a lot for Lucas but she deserves better than being treated like second best. It was refreshing seeing Lucas with a girl who isn't Brooke or Peyton, too. I don't get how people are so cold to Lindsay just because she knew about Lucas and Peyton's history. It's not like that gives Lucas and Peyton any right to hurt her the way they did, but that just goes back to the LP story. And now I'm getting off topic haha so I'll stop.