Yup. I just think it makes sense that if there's a fundamental change in either the omicron itself (ie, it's nerfed) or in its effectiveness in the game mode that it applies to, then removing the omicron and refunding the materials makes most sense. It's not just that the omicron isn't especially useful in the Krayt raid, they've also removed cRancor, the only other place where it is really of use.
It just seems totally counter intuitive that the first raid omicron they introduced becomes much less useful when, a few months later, they introduce a new raid.