Did you read the paper? It's not a paper that "brings new information to the table", it's a paper which presents recent experiments and tries to show that there is little scientific evidence of loss aversion.
> The basic principle behind loss aversion is simple.
Huh? I don't understand what you're saying? You're saying that "loss aversion" is simple, but then you give examples of losses not being universally more impactful than gains? What you're describing here is exactly the point of the authors: Both modes are important
> … swayed more by greed or by fear.
And you should be aware that "loss aversion" is very careful to not talk about the psychological process behind. Loss aversion is not about greed, fear or any feeling and/or instinct. Loss aversion is a measurable effect. None of the papers that claim that loss aversion is a general principle claims that "greed is stronger than love" or anything similar to that. In fact, they are very "chicken" and just shrug it away.