It depends. Often, with some focus on your own play skills, your dog's attitude to tug can be radically improved.
In addition, many dogs which are not interested in conventional tugs are extremely interested in the flirt pole. This appears much more 'alive' to the dog as it seems to be separate from your body.
If you still feel that your dog doesn't have enough interest in toys to take the course, it might be beneficial to first take some
Fenzi Academy courses which focus on developing tug play - before returning to this course material.