guys, guys guys....
I'm beginning to think that Dick makes better and more coherent arguments than Chris. At least Dick doesn't type ANGRY!
...and no, I don't need big brother to tell me to stay clear of wake turbulence.
Chris, it is a requirement that ATC use the phrase "caution wake turbulence" in certain situations, and in others provide a wake turbulence separation standard as detailed in AIP and MATS.
The reason.... maybe some pilots forget about wake turbulence, just like they forget to select gear down, or flaps down, or get too high or too fast on final. In other words, ATC is part of the Safety Management System for aviation. Not, as you seem to see ATC, as some sort of road block to the free spirit of a pilot, or some sort of big brother.
It's not 1984, its 2006. You're thinking is 2 decades behind the time. ADS-B, Multilateration, Mode-S, CPDLC, etc are here. When next you come to Oz you may hear the term "Surveillance Service Terminated" and I'll bet you wonder what it means?