@vanvugt: If the plan is to make it not log in to the Activities view in 22.04, I can think it’s unfortunate to ship 21.10 with the current behavior. Personally I don’t care so much, but to many users the first impression is a significant part of their experience. There is a wallpaper competition going on, and it would be a bit contradictory to distract the winning contribution with this GNOME idea instead of letting it shine. 
If it wouldn’t cause a lot of extra work, and even if it would be a hackish solution only for 21.10, I think it’s worth (re-) considering.