I think it's wrong to say all their stylists are rubbish. I worked for Toni & Guy for
Three years having already been hairdressing for several years and I found their training to be a great bonus on top of my previous training. ( I hasten to add that I was very lucky and had done an apprenticeship in a great salon!)
However I have trade tested stylists whose sole training is T&G and is was like watching someone painting by numbers!!
They do treat staff unfairly and the wages aren't that great if you are a busy competent stylist you could do better elsewhere,, thisvaries widely across T&G salons depending on wether they are company salons or franchises in my experience.
Sorry if I have gone on a bit, but hope this helps!! ;-)