Yes, there was too much of it. I actually liked how Dumbledore went, wait, you care about Harry and then its all about Lily. To me that showed how Snape works so well and the other parts could have been smaller. There was a bit too much of redeem Snape slightly at the expense of Dumbledore.

I mean Dumbledore did some rather messed up things too but he was fairly honest to Harry. Snape never took Harry on his own, all his interactions were colored by Lily and James, which I found rather sad and disturbing.

One thing I've always appreciated about the books is how there's a lot of grey area around everyone. The movies don't have quite as much of that which is a shame but I think something that wasn't a focus in how they made the movies.