There IS no camping in INF
I don't believe the word CAMPER exists in Infiltration. If you are the last one left, and they have more than one alive, then yes, there is no reason NOT to run out when the last player countdown starts.
But......if you are the last one left and they have ONE left. Hold your position. Draw the round out, and it is a tie. You just saved your team a round. It is safer than rushing out and risking losing a round.
If you have more people than them, hold your position. This way, you don't risk the tie or loss. Wait for them to come to you. That is how I feel about it. I am not even really big on camping. But I do a little of both, rushing/camping. It depends on what map and where I spawn. Or you don't even have to rush. You can go about halfway and set up position there.
I do feel, however. If someone is in a spot where no one would ever find them, and they aren't trying to kill people, they are just trying to hide, then they should be whacked with a wet noodle. This just draws out the round. Like if you are on a map like EP and you go in the back of the lane all the way to the cockpit and go prone behind the seats facing sideways where you can't see anyone and they can't see you. Now that is just wrong. Or is they DO see them but don't take their shot. Those things I will disagree on.
And I really don't see how hard it is just to ignore all of the comments they make. If they start teamkilling you, now there is where the game will go downhill, but that is easy to get them to stop. They may not stop right then, but you can get them banned easily. Camping is not a "thing" in INF. I don't see why people get angry about it. I know that a lot of the INF Vets don't. But there are n00bs that come in from CS and TO and mods like that and they will scream camper until your ears bleed. I played TO2 and I got this treatment.
If the people want to argue about camping, tell their asses to go to TO where they will actually have backup from the whole nearly the whole community.