On the negative side, it would probably have a minor impact on the number of new phones sold if old ones were able to be "refurbished" in this way. Again, probably not significant, but if it's even a penny cash flow negative, why invest their resources in it?

Overall the only significant gain to be made is the announcement because it can be spun and quoted to the average consumer as Samsung being more eco-friendly. It's akin to enabling consumerism, and consumers generally don't go to check if companies were telling the truth about this stuff.