Poisons do not have flexible options in pve (and honestly not in pvp either, it's pretty standard for most situations), and if you're arguing about pvp - snd adds a lot of depth to pvp rotations because you have to choose between kidney, evis, rupture, or snd. That's a meaningful choice in real pvp, especially with lower energy regen. This thread is mostly about pve rotation though, so let's not get off track too much.
Snd is as much of another WA to track and maintain as stormstrike or bloodthirst (etc). You press them when the cooldown (WA) is up. The entire game is about pressing the buttons you have to maximize your class. Snd is no different. Just another button that adds a bit of depth to the rotation. It's such a weird argument.
Seems to me like a lot of people would just rather play warriors in this thread tbh.