There is nothing inherently bad about gopros. The problem is how people use them. They don't strive for multiple angles. They don't edit the footage. They don't make the extra effort to shoot smooth footage. They don't mix it up with footage from non-POV cameras. They expect the camera to produce decent sound quality. Etc, etc.
I don't have an opinion on whether climbing is an especially hard thing to record with a gopro, but I've shot lots of hiking, mountain biking, snow biking, snowboarding, and sea kayaking videos, and most people who see my vids seem to enjoy them and more importantly to me, I feel they capture the feeling of the experience about 1,000 times better than still photos. It all does take effort though.
Take a peek at an example: Hiking Across Kodiak Island