... or use A Little Knight Music, or Rock Armor Tonic, or have a Saarebas spam barrier, or play an Avvar with Chilled Defense, or play a Reaver with Rampage, etc. There are plenty of strategies that don't rely on camping.
While I like all these except Chilled defense, the bolter KD is an issue for those of us without PI, and the subsequent stagger lock is what ends up killing rather than direct damage.
As for Avvar, it is more reliable to abuse Bear Mauls the Wolves's recent buff and turn one's back to the bolters rather than try to rely on CD / defenses. Guaranteed 1 damage per hit is far more reliable than maybe reducing the enemy damage enough to survive it.
War Horn is also quite nice vs Bolters. They're vulnerable to every type of CC AND they're naturally slow.
War Cry on SS/Lego is pretty fantastic too. Lego has WF for invincibility too. Used to be soo much more OP though (until the nerf)
Camping is simply the most reliable way to do things. Not the only way, but certainly the most repeatable results.
That said, I don't always do it. As I recommended to Reading, play Assassin (or hunter, etc) for a very different Anti-Camp experience that handles bolters quite nicely.