Almost 90% of my female friends keep shopping carts full of items as their wishlists or curation lists for clothing. A bit less of my male friends do the same, or do it for other type of items, but still do it. I call bullshit on this data as well. The shopping carts translation to actual purchases has little to do with intent to buy and more about browsing. Similar to how loads of people go to a clothing shop to try out 10 different outfits because it's an interesting activity and may not buy anything at all, regardless of fit.

It's also somehow "more real" than wishlists in the ecommerces that support it (not all of them do).