Region Free is not the same as Copy Protection. Region Free means that you can play it on any DVD player across the world. Each Region of the world uses a different region. USA and North America is Region 1. I believe the UK is Region 2. So that is what Region Free is all about.
Including Copy Protection on DVD Shrink would make the application illegal to use. Since it is legal to make a backup but not legal to make more than 1 backup or to use it for anything other than a backup.
Plus DVD Shrink has not been updated itself. The creator of DVD Shrink has since sold out, so to speak, and is now doing his work for Nero with Recode. DVD Shrink itself has not been updated in years. So having copy protection bypass on DVD Shrink would not work with any of today's DVD's.
This is why AnyDVD is such a good tool. It is constantly updated.