DMN13 — mix up of list and non-list in filter expression example

Section 10.3.2.5 includes a few examples for the filter expression. In particular it shows the following example:
[ {x:1, y:2}, {x:2, y:3} ][x=1] = {x:1, y:2}

The result of this expression is a context (an object). I first thought this must be a mistake, as the filter expression should always return a list.

I then found the following sentence: 'Singleton lists are equal to their single item.', showing that the above expression returns a non-list value by intention.

I wonder how the need for mixing up lists and non-list (with the so called singleton list) has arisen. I have never seem something like it before and I have difficulties to see its value. In addition, I could not find a second sentence in the entire standard that also uses or describes the concept of singleton lists.

Therefore, I would like to propose removing this single sentence about singleton-lists and would like to change the example to look like this:
[ {x:1, y:2}, {x:2, y:3} ][x=1] = [{x:1, y:2}]

Correct the example in 10.3.2.5

The example on section "10.3.2.5" is missing the list operator in the result.