Hi there Bedford.
First off I think it´s kind of unprofessional do come here and publicly doubt the talent of the person you´re hiring.
That said keep in mind that you can accomplish a LOT and I mean a LOT of stuff in AE. There are limitations but also those can be used by a creative mind to be transformed in breakthroughs.
Another thing: AE is a very complex tool. Sure most kids today can mimic tutorials and simply invert the order of the text on the exemples and say they “work on AE” but the real research you should be doing is on this person’s demoreel and background. There you might be able to find out if the person is or is not capable for the task.
And yes it can be done. Fairly easy with the proper planning and right material if you ask me. But I wouldn’t dare steping in front of your guy/girl and giving my impressions and ideas.
I hope you didn´t find my response offensive. It is not at all supposed to be.
Cheers and all the best.