I suppose it might be obvious, but I think the point is that there is a difference between what is "possible" with a trainer, and what is reasonable to be trying to learn how to do with your trainer .

So while a rather advanced pilot can do all kinds of amazing stuff with a trainer, a beginner shouldn't worry about that quite yet. Get the basics down, wear the tread off the tires doing touch-and-goes, etc. Do basic loop-and-roll stuff, and maybe some short inverted flight, mostly to learn how to handle a plane that isn't upright and level.

Then, when you want to learn how to really do the acrobatics, get a plane that's designed for it. You'll find it easiler to learn the acrobatics on a 2nd or 3rd plane.

Then, for kicks, go back and try your newly larned tricks on the ole trainer. Why? because now you can.