I would consider the sources of those articles. Those comments seem par for the course at SDN and in articles that want to slow down the pace of full practice independence for all NP's. My program was over 10 years ago...much of what I know now are no longer because of that program.
When I was a new NP, I felt like an intern. I knew how to assess a patient, write an H&P and progress note, and present my plan to a physician. However, my plan was never final, needed some tweaking, and additional questions answered by the physician I was working with. But I certainly wasn't viewed by the practice as inept.
My RN experience helped as far as modeling provider behavior and critical thinking process. As a bedside nurse, I often asked the providers about the rationale for their actions as a way to learn. I think letting go of the RN mentality can be hard when you're in a provider role.