The current game designer I'm with could not tell you anything regarding various character creation tools and strategies that have been used in various games (APB, City of Heroes, Skyrim, etc. being good relatively recent examples), yet his job is to spec out that very thing for one of our products. The result has not been very good, but this person outranks the rest of the team on these decisions.
Currently this guy is so bereft of anything to do design-wise, he's decided to read some books on Agile and has moved into pushing the artists and programmers around as if he's the project manager as well, which upper management collectively shrugged at and allowed. Management is where every 'designer' I've worked with has wound up and this guy will be no exception.
At the end of the day, I no longer have much faith in the average game studio because I know these people are out calling the shots on creative decisions. If you aren't a coder or an artist, for the love of fuck, please at least be a genuine gamer with a working understanding of game design history. There's been tens of thousands of video games produced now and some are very much worth remembering when considering a new design, both what to do and what to avoid. Your products will be better for it.