What part of taking away a part of legendary runes to make the new legendary relics do you have a hard time understanding? They are literally taking away a existing function, then replacing it will a new function, well saying; Oh, we are giving something for you to grind all over again for. ❤️ *tee hee* ❤️
It's just a bit of an FU to the player base that put in a lot of work for their Legendary gear.