Oh come on now,not even a stalker bolter shot removes all of your armor(only plasma weapons do that but they are broken).And as soon as you get some cover you can regenerate it to full!
With that being said though, MoN still only has 2 bolter hits extra of hit points. Would you like for your storm shield to only take 2 hit points before it goes away? I've hardly seen any MoN players in the past games I've played.
TBH I still play them, since they somewhat reminds of what I expect of the Striking Scorpions, though with quite a bit less stealthy, but it does teach me a few of the decent/good ways to flank and/or ambush enemies. I have, however, not been able to play a whole lot since the latest patch due a massive decrease in FPS, so I do not know exactly how much weaker they are as it is hard to gauge such things with less than 5 FPS (1 to 2 if they attack too). As I have said before; "The nerf to the "Dumb" Bolt Pistol is quite annoying and makes the MoN even worse.". Like I need a "Smart" Weapon to tell me what to hit