TLDR, ops are 4 shotting people, and you can't have a class that can just pop stealth and 4 shot someone in a stunlock. It's not like they're globaling people in light an medium armor, they're killing mercs in 4-5 hits while conserving debilitate.
The operative class is still going to be useful, and people are still going to play it. You're just not going to be able to kill any class with the exception of sage / sorc in 4 hits.
Cry all you want about it, but people have posted evidence of 7-9k openers.
And you just can't have that.