People are always going to camp and if they wish to play that way then so be it. With that being said I feel as though Ghosts is a very camper friendly game just as Black Ops 2 was a very rusher friendly game. I prefer the more rusher oriented gameplay Black Ops 2 offered but that's me. HC SnD has always brought out the worst of the game and this year it's no different.
No playlist is more camper friendly than HC SnD/SnR, no kill cam and only one life to live. I've noticed more people not playing the objective this year and the majority of those players are Master Prestige with Ghillie suits hiding in spawn with Thermal LMGs or one the 3298543858363 Semi Auto Snipers. Don't get me wrong, I enjoy getting easy wins but it does make the match take forever.
Map design is also a huge factor, IW always tries to stuff as much irrelevant crap as they can on a map. The maps in Ghosts are littered with corners and head glitches, I will say however that the maps are not nearly as bad as MW3. MW3 had so many intersecting lines of site it was nearly impossible to determine where an enemy shot from. Ghosts campers are far easier to counter than the MW3 campers.
I cannot speak for any other modes as I play only HC SnR, but I'd assume that what I'm seeing in HC SnR is a direct reflection of what's going on in the others. Camping is always going to be there, what isn't though are the developers catering to them. IW really needs to study maps from Treyarch games and perhaps even Counter Strike. I want to see IW make a map like Inferno or Dust 2.