I'm not sold on it being Nokia, but from their 5g chipset page:

ReefShark packs more functionality into 50 percent smaller hardware compared to products that use discrete components > ReefShark chipset decreases mMIMO antenna size by half >ReefShark cuts energy use by 85 percent, increasing deployment options >Boosts the intelligence and performance of MIMO antennas

So density and power. This chipset would be around for a long time, it makes sense to be on the latest process.