It actually depends on the sticker if it is just decorative or if it does have a purpose or other function, but Stickers are optional and they are not going to make that changes to a profile are showing up in a Project Feed or Project Google Group. So the stickers don't have the same effect.
The Dutch Roots Project has a Dutch Roots Project Box and there also is a Dutch Roots Sticker. Both the Project Box and the Sticker have the same needs system build in and both have the jaar and provincie build in as well.
All WikiTree members can use the Sticker, so it's not directly Project related and everyone can add it to their own profile, or profiles they manage, just to show they are proud of their Dutch Roots. So the sticker is mostly used for or added to the younger profiles, that don't really need Project management or Project Protection like many of the earlier more widely shared ones (there are no LNAB or other problems like a high risk for duplication, etc).
But ... because the Dutch Roots Stickers do have the same needs option and jaar and provincie option built in, if members would like some help from other members to get them all sourced an improved, they still and just like with the Project box (template) can add the same needs to the Sticker (which will add the profiles to the Project maintenance categories), and this way everyone can in an easy way, get some help to get these profiles sourced and improved. Or if they have sources and are fine, if members fill in the jaar (Birth year) and provincie (Province) parameters, the profiles are added to the proper categories. If nothing is filled in, it only will add the profiles to the categorie Nederlanders.
We also have a Dutch Roots Challenge Winner Sticker and for our Sub Projects we have the Participant or User stickers (Nederlands Portaal, Portaal World-The Netherlands)
The first, so the Challenge winner sticker, is only added by the members who won one of our challenges and it just adds the 'trophee' and a line that says ..... won the Dutch Roots March 2018 Challenge. (it doesn't categorize).
The Sub Project Participant Stickers only will direct members to the Sub Project page, so to the Nederlands Portaal or the Portal World-The Netherlands.
So there are all kinds of stickers, some are just adding a line, some will categorize, some will add a direct link to a Sub Project and of course they all will add a small image, which is also why some people like the stickers.
All stickers will tell or show you something about a person, it shows they are a member of a Sub Project, it shows they are using a Portal, or it can show something they did or experienced, like the Veteran Stickers , or the migration stickers, or it only says they were born in a specific Country or place, like for example the South African Roots Sticker to show they are proud of their Roots..