He didn't say wanting a challenge is the only valid view point, he said complete lack of challenge is boring. That may not be a universal opinion, but I'd guess most RPG players would want at least some challenge.
If it where true that RPGers like alot of challenge, I doubt games like Wow, Oblivion, Fallout 3, Mass Effect and 2 etc would be as widely popular and best selling as they are now. They are amongst the most easiest games ever made.
