Technically, compared to other health science degrees, the entry requirements for most nursing schools isn't all that advanced. Intro level college science courses are what most require. The high GPA needed in many schools is due to a large of number of otherwise qualified applicants applying for just a few spaces in the nursing programs
Many nursing programs, not including prereq/non-nursing courses, provide (just) one (LPN) or two (RN) years of instruction. Still, that shouldn't discount the time and effort to complete the pre-reqs. In many facilities, the LPNs responsibilities are almost identical to the RNs, adding to the confusion of how much education is "needed" to become a nurse.
Also adding to the confusion, these new accelerated BSN programs just have one year of nursing coursework to earn an RN.
If these different programs create safe nurses, then I've no problem with relatively low entry requirements and a quick training program. However, that's all the more reason that experience really ought to count for more in one's nursing career. We all know that the nurse several years out is (in most cases) a better nurse than one fresh out of school, yet the remuneration and workload is almost identical in many places.
I can see why people advocate BSN as entry, simply as a way to communicate to the public that nurses need to be smart - that it takes more than a year or two to become qualified to practice. I can see where Joe Public would see that Physical Therapists require masters degrees and figure that they must have to learn more and know more than a nurse who doesn't even have a bachelor's degree. However, I do see nursing as a practice - a field that you learn primarily through experience. More years of education will not necessarily turn out better nurses. On the other hand, if new nurses are expected to know what experienced nurses know (what the doctor's going to order for this or that, catch every possible MD mistake, etc) then they DO need more education - a medical education!
By the way, for the sake of full disclosure, let me explain that while I have an active RN license that I don't practice nursing. Still, I hate to see people who have the aptitude and desire for clinical nursing to be turned off by the work conditions. I have the utmost respect for bedside nurses and want to see them acknowledged and rewarded.