Why do the writers hate Foulques?

[Fenral]

What do you mean where did the cliff come from? You fight right next to the cliff.

Just honestly quoting an honest reaction. Depending on the time of day, the cliff really isn't that apparent, but whether you noticed it or not beforehand it is a pretty lame plot device.

Again, a tragic tale and a badly told tale aren't the same thing.

But being tragic does not automatically make a story good, either.