Is there a benefit to a collection having a relationship with itself or is it a glitch that this can be done???
Nope, as all the properties of the collection are accessible. Why do you want to do that ?
I am not sure what the benefit is to this feature… that was the purpose of this post. I am curious what the benefit is because it IS an option.
They explain it very well here 
Designing your No-Code Database - YouTube