I met a quite competent AF'less Fury with a Javelin.
But still if you want to snipe and want an instant stagger power, pick either Slaarian or Quarian Infiltrators. Both are noob friendly and you will deal a lot more damage.
The idea (read: gimmick?) behind the build the guy proposed didn't seem to be solely the stagger. It was a combination of what a Fury can do to a spawn if needed, albeit less often; coupled with the ability to teleport through walls and a weapon that's good at shooting through said wall. All on a kit that takes adrenaline mods up to Drell level. (Literally, no? Speccing AH to movement puts her at Full Fitness Drell speed right? Honest question.)
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Ofc it's not ideal, but I did pretty damn good with it and suspect many would. I'd say her standard build's biggest downfall is she's either in C.Q.C. or she's really not doing much. This extends her effective range if you land in Condor/Rio instead of Glacier/White.
All that being said, my Fury's not currently specced that way and it's not something I've done much. I'm just amused at people saying it's wrong and volus/shuriken comparisons when I think it works, well... well.