Yes if PM's don't like stickers they can add just the categories for each and everything, and nowadays adding categories is much easier because as Jan mentions, we have the category picker.
In 2015 we didn't have DB suggestions/WT+, or categorie pickers, so before all these improvements, project boxes/ stickers just where (and for a lot of members they still are) the easiest way to categorize profiles, members didn't have to learn or memorize a whole bunch of categories or how to add them, and by using the project boxes or stickers, new red or wrong categories were minimized, because the only thing members had to do was copy and paste a project box or sticker, fill in the parameters correctly and profiles all were categorized.
This also is why we chose to just have a few 'needs' for our project, members only have to remember/learn and add a few short words (Birth, More Records, Biography, PPP, LNAB, Profiles Created) and profiles are categorized.
In the Dutch Descendant template/sticker.
The natie= Country of Birth, and for members from the United States/USA for the Country of Birth they would fill in United States (or USA) as Country of Birth:
Result: [[Category:Dutch Descendants of United States]]
And if members wanted to categorize them further, the state could be filled in at provincie= State of Birth and the result would be the category:
Category: Dutch Descendants of Virginia, United States
As said it was started as project box/ sticker for WikiTree / Dutch Roots (Netherlands) project members not born in the Netherlands, but with Dutch Roots/ancestors and it also can be used to add 'needs', so if Dutch Descendants still were looking for sources or his or her deeper ancestors, they also can use the sticker to add needs if they like the 'bling'.
But if no one objects and also to prevent a whole bunch of categories we don't really need and that are not used a lot, I think it's fine to just keep the natie parameter and remove the provincie parameter from the Dutch Descendants sticker as W proposed. If members want to categorize by location and more specific, I'm sure they also can add one of the location categories. So if they want to categorize profiles by state I'm sure there is one for every state already?