True. But there are a lot of people who don't understand the value of even rares and automatically shard what could be used to infuse into a legendary that has a +5 mod thus artificially increasing it's power level. That also applies to legendary items one has not acquired yet. So if you have a stockpile of 'good' blues, saving them for that reason is a good idea. Note: you can do the same with Exotics as well. They too can be infused to increase their base power level, It's something a large number of players have yet to notice since it's not explained in the game.