Manjaro is like a nice car with a canister of TNT attached to it. At first, all you experience is the nice car. If you really like the car, it is easily to feel smarter than the guy who warned you not to drive it. As time goes on, the chances that the TNT explodes goes up. However, it is always possible that your roads are smooth enough that it never blows up for you. Regardless, if you know about the design flaw, recommending such a car to others is really, really bad advice.
Using the AUR with Manjaro is like driving the car above on a gravel road. It does not guarantee that the TNT will go off, but it makes it much more likely.
I hope Manjaro continues to work well for you. Truly.
Also, please do not encourage others to use it.