Bringing this up again. The post with the same name from 2016 is locked and marked as "Solved." It is most definitely NOT solved as we STILL don't have the ability to sync selectively. Because of this, my team has had several laptops completely filled and we have had to archive/delete over 1TB of data just so we could keep working. I'm really hoping Adobe will address this, but since it has been 6 years with no movement (at least not that I can see), we will likely be moving to another service for asset management.
IT consultant here. This feature alone will hold back at least 3 of our clients from moving their Adobe data (InDesign, Photoshop, etc.) to Adobe's platform and they will adopt a different solution. Any other cloud storage provider offers this, crazy to imagine a company as established as Adobe hasn't engineered this into their platform for 6 years now.