This is a topic that is covered ad nauseum on this site. There are countless threads about exactly this question.
Yes, there is a wide variety of clinical training. Yes, some of them on online, which, in my opinion, is a travesty. However, APNs do require clinical exposure as part of their training. But, there is poor oversight and these experiences can be of variable quality, which is also unacceptable to me.
As far as individual practice rights, this varies state-by-state. In some states, there is no independent practice. In some states, there is full practice right after graduation (which is dangerous, I feel). In other states, the APN is required to work in a supervised setting for several years prior to applying for independent privileges. I happen to feel that the latter is a good compromise for covering underserved areas. I have discussed this previously, you can look at my post history if you want, and this is why
@coffee-doc felt the need to call me out.
I understand that you are not intending to bash them, but you did start yet another thread which will serve that purpose.
Now, cue the APN haters ...