kiwi may have a point that in her country loops are not included, possibly only in the US or maybe it was later not included at all... IDK. I checked a review and it said it was included. Looking at the current MS site there is no mention on the Type Cover page or specifications of a loop being included or that it even exists.
So why if it changed would they change it. my hypothesis is: If its included you'll end up replacing them and that's a big cost not just for loops but shipping which is likely much more expensive than the item. Therefore, by not including them you eliminate a significant drag on profitability. They may also have learned via surveys and feedback that many, such as myself, weren't using them anyway.