I tend to agree, but I would set the age lower. A person can graduate high school at 18, get a 4-year degree, and still be 3 years away from “adulthood” by your definition. There are plenty of professionals in the first 3 years of their career who are contributing members of society. Shouldn’t they be able to drive to work, sign a rental contract, etc? I’ve been in my career for over 20 years, and I have always worked with young people who may be lacking experience but are still productive employees. I think you’d be cutting out a significant portion of the workforce by excluding those in early adulthood.
I don’t understand how this is an advantage. Yes, you can swap RAM with the system powered up, but what happens to the information in the module that was removed? Is the OS doing some kind of RAID-like memory allocation? The article wasn’t clear on how this would actually work.