Bale's superb efforts this year have led to claims that Spurs are overly-reliant on their star forward, who has scored 21 goals.
"That's ridiculous. That's a poor comment," said an angry Friedel, who spent three years at Liverpool when he first came to England.
"Gareth is an exceptional player and we have a lot of exceptional players.
"Every good team has their star players. Gareth is playing well for us. We are a better team for it, but we have some exceptional players that can step in and do the job."