Wow. When I was a CNA many years ago, I absolutely did NOT want the responsibility of the Nurse. I would never had dreamed of calling myself a nurse when I was not. As far as I saw it, I already had a super tough busy job making less than half of what the nurse's did. Not to mention, I clearly knew my limitations of my CNA education and knowledge compared to a nurse.
When others say "patients don't know the difference between CNAs and Nurses because it's too confusing". I say educate them! Unless they are just really confused, it takes about 2 seconds to say I am your Nurse today and I will be responsible for your assessment, wound care, medications, etc. _____ will be your Tech/CNA/Aide today and will be able to assist you with getting dressed, going to the bathroom, grooming, bathing, etc. It also helps if in the hospital you write on a board for patients your name as the Nurse and then the Tech/CNAs name. Where I work 90% of the patients seem to understand the roles without much difficulty at all.