Sorry I am not using an anonymizer to keep from being located in the real world by means of assign IP addresses.
If the IP address you are using to connect with is not the same IP address that remains in the packet when it gets to the final destination then you are using an anonymizer.
I do from time to time used the tor network but that however is mainly to give me protection at public hot spots every now and then or give me a US address when I am out of the country to keep me from being block from some US websites or to give me a GB address so I can download otherwise US blocked BBS shows.
Still you can not tied me to the IP physical location contain in the packets.
One of the most wonderful things about the internet is that there is always more then one solution to any problem and just because you are only seeing one solution, in this case anonymizer, does not mean that more then one solution does not exist!!!!!
Strange that you are of the opinion that you know all there is to know about the net when as a non-expert myself I had not been impressed with your level of knowledge.