Seems to me that an aircraft cleared to finals shouldn't be orbited there for reasons already stated. There's a number of ways that an inexperienced pilot could easily stuff that one up.
I had the pleasure of practicing that in a very old Cessna 150 from a 40 degrees flap approach, heart rate of the first one went sky high, everyone should try it for a laugh.
Yes, I learned to fly on the C150 - with 40 flap selected, full power increases the noise level but not the flight level!