Have the DMs that are having trouble never heard of controllers and artillery? There's no "meta-gaming" necessary.
I tend to view artillery and controllers as "specials". I enjoy converting classic modules for my group, and combats that focus on ranged fire tend to be in the minority. It irks me that a single build forces me down certain narrative pathways. I don't have this problem with any other class or build.
Here's my challenge: name any other class that, when faced with certain monster compositions (minions, melee skirmishers/soldiers, even some brutes/lurkers) can enter a combat with absolutely no fear, unless severely outnumbered or outpowered.
A wizard is awesome against minions, but is still vulnerable to a mass rush (low hp). A cleric is awesome against undead, but can't take any of them for granted. A striker is awesome at cutting down controllers, but can still be blinded/stunned/incinerated.
By comparison, my play experience is that a 'rager can pretty much shrug off most "balanced" non-ranged encounters in the Heroic tier. And he's no worse than a regular fighter against ranged attackers. Yes, a hill giant will probably take apart a 3rd level 'rager.... but the 'rager is just going to laugh if he's faced with hordes of goblins or orcs. Unless, inexplicably, those same goblins and orcs start pelting him with rocks instead of whaling on him with glaive-guisarmes.
In response to FireLance: Yes, I think it'd be a whole lot better if they could only gain the temp hp once per round. I'd further prefer that the whole shtick was scalable by level or tier. Maybe 2 temp hp per round at Heroic tier, scaling to 4 temp hp at Paragon and 6 temp hp at Epic.
In response to Nittanytbone: I agree that it gets slightly more acceptable at higher levels, but it's still rough even then. As the fighter gains levels, they have more access to other things that compound the problem, like regeneration and damage reduction.
As mentioned above, the straw that broke my back was the 'rager / boundless endurance combo. Watching a tough solo beat the dude down at a rate of 1 hp per round was heartbreaking... especially knowing that if the solo was any more powerful, it'd kill any other PC in the party in 2 rounds.