Those reasons are a bit outdated, you can certainly have add-and-remove crdts with or-sets, and you can do so with almost no garbage. One of the Tomtom engineer

Those reasons are a bit outdated, you can certainly have add-and-remove crdts with or-sets, and you can do so with almost no garbage. One of the Tomtom engineers explained one approach at Strangeloop last month: https://www.youtube.com/watch?v=veeWamWy8dk https://www.youtube.com/watch?v=veeWamWy8dk