Because...

Exactly....it makes no sense. Why Nerf GHorn/Thorn if it will be irrelevant anyways (not arguing with the need to nerf them currently)? They say year one stuff will behave the same for year one activities, but am I really going to use a year one exotic that does less damage than year 2 rare/legendary gear??? NO!!! And no one will use that stuff for end game pvp because it's both nerfed and lower attack than anything else in year two... Another question is what point will there be to doing year one stuff if it gives you outdated legendaries? Why play POE, CROTA, VOG or TOO anymore? All of those legendaries are irrelevant now. I hope they atleast address the loot attained for trials, otherwise that too will become irrelevant?