I think there are some misconceptions about tours and since I used to lead them, I'd like to respond.
The vast majority of people here who take tours would definitely prefer a Rick Steves tour over a major tour company's tours. They are closer to independent type travel and from my time here it seems most like planning what to see even if they are on tour.
However, not everyone is like that. They readily prefer a large bus, whirlwind type tour.
You would be surprised how many people on my tours had no idea of what we were going to see. They might know the cities but not what we were going to see each day. It wasn't really important to them. When they had free time, they would often ask me what they should do. They just wanted to be able to tell their friends they had been to a certain place and saw the major sites.
As for shopping, well, on my first few tours I hardly made any shopping stops. I thought, "why waste time shopping when we could be seeing things." I almost got lynched. People wanted time to shop. I even got a call from my tour company telling me to give them more time to shop because the passengers were complaining. They wanted souvenirs.
At the end of every tour, passengers fill out a survey about their trip. These are extremely important and are read carefully by the tour companies. Too many bad surveys and a tour director could get fired. Too many complaints about an itinerary and it gets changed. Almost all stops are approved by the tour company, including shopping stops, and if they become unpopular, they are changed. Yes, in some cases, tour directors get commissions for shopping but it's rare for a tour company to get anything out of it. And if a stop gets too many complaints, the tour director is not allowed to stop there.
Also remember that not everyone wants to pack light. They like having bell service. They like to eat at places where they recognize the food. They want to stay in a modern, American style hotel. These are not the most adventurous people. They want it to be like home. On occasion, I'd get passengers who had researched and knew exactly what they wanted to do. Contrary to what Rick says, I loved those passengers because all I had to do is point them in the right direction and they were happy.
A good tour manager wears many hats. He has to be a knowledgable guide to discuss everything you are going to see, he has to have management and organizational skills to make sure any problems that arise are taken care of without the passengers knowing (if possible), and he must be both a friend and a leader. A good tour manager makes sure you get everything you were promised in the tour brochure.
Now as for the terms tour guide, tour director and tour manager. According to the official definitions, a tour guide is someone who leads you locally whether it be for a museum tour, city tour or anything that just lasts a few hours. A tour director is someone who is responsible for and leads tours over multiple days and overnight stops. It is more responsibility. (A tour manager is the same as a tour director but that is the term used outside North America.)
Rick Steves' guides are technically tour managers. However, he uses the term "guide" brilliantly for marketing purposes. When comparing his "guides" to others, he can include both bad local guides as well as tour managers from other companies. It's not really a fair comparison but business is business.
While most people here would probably not be happy on a larger bus tour many of the people taking those tours would not be happy on an RS tour. Just go to other travel forums and see what they think of RS.
As for the OP, I think others were right and it was a sham posting promoting another tour company. Just too much of what she wrote blasting Trafalgar seemed too made up.