As the others have said, it mainly comes down to just what that AOW card means. No matter what the operation, shop, instructor, or agency says the card has been so watered down as to be little more than a liability release.
Even with AOW or Advanced Level classes like Bob and I offer that go way beyond the typical class, some more responsible ops just won't take the chance.
My AOW class was kinda weak. But better than some, and much better than others where I see instructors taking AOW students on the deep dive to 90 feet in 40 degree water with al80's and unsealed regs.
Others are just an instructor leading someone by the hand on the 5 or 6 dives, collecting the fee, and slapping a card in their hand.
My first Pacific Ocean dive was also my first ocean rescue assist. AOW diver with 25 plus dives. All, including his AOW cert, in the Caribbean. Off Carmel in 54 degree water, in a 7 mil for the first time, and in kelp for the first time with a buddy who took a powder, the diver got stressed, tangled up on the surface, was on the verge of panic when the DM got to him. I arrived shortly after to assist with the tow after seeing my buddy safely on the boat.
My buddy was OW certed. But had just done 20 dives off a liveaboard near Catalina. His total dive count was just over 30 as I remember from signing his log book.
The AOW cert that the dive got in the Caribbean in no way prepared him for the diving that day. His instructor told him he'd be fine.
Finding good AOW training takes a little effort now. I hope to make that task easier with the new book coming out next week.
As for Rescue training as others have said, that needs to be changed to require a refresher or recert just like CPR. I see a lot of people claiming to be "rescue divers" that haven't practiced one of the skills since they took the class 3,4, or even 6 years ago.
They are not rescue divers. The last class I taught I told my students that they need to stay up on the skills. They are also welcome to come play victim or just participate. If they want to actually be a student they'll sign a waiver and release, as well as fill out a medical.
I do one day mini rescue workshops that just go over the skills that are in the SEI OW class.
I have had people who for one reason or another did not want to take a full rescue class.
No reason not to give them the skills to do panicked diver, non-responsive diver from depth, tow while stripping gear, and supporting a diver at the surface. At least they will be able to do more than the majority of OW and AOW divers out there.