The goal is not to kill the enemy team. It's to push the crystal. You can kill their team all day long but if one dude manages to push that crystal an inch further you're going to lose anyway.
They're not sitting "AFK" either. You're actually avoiding keeping one other person "afk" to help with the overall push. By breaking the first checkpoint immediately/fast you can more easily/quickly push to the finish vs having not done so or vs leaving someone behind to get ganked while the rest of the dps go be heroes or something.
You can:1. Spend more time and effort fighting people in spawn while the checkpoint slowly loads giving even one chance at them deleting the person on top of it or stopping it from being pushed-or-The latter requires LESS afk time and time wasted, and doesn't require dps raising the risk of getting faceplanted if something goes awry in enemy territory.2. You can immediately cap point and then go back to murder house resting assured that the crystal will move in the right direction so long as you're holding the line.
This is also wrong as LBs have proven. Summoner LB, DRG LB, WHM LB WAR LB, etc etc all punish group ups. 3 LBs back to back can instantly turn the tide. If even one person gets past you enough to lb the person holding the point that's either no checkpoint reached or worse crystal moving the opposite direction now.
Not to mention Guard makes this a moot point as well (as it should). Even if they're taking damage a single opponent stopping the crystal from clearing the check point is a loss.
Running after "stragglers" into enemy spawn is a quick road to getting killed unless the team is literally afking or only 1v4'ing you. If the SMN spawns with LB all they have to do is delete you from range and/or assist one other team mate and now you've lost the gain on the crystal for a death.
The Goal should be to clear the checkpoint IMMEDIATELY and then everyone can go play war in the trenches.
This as well. If you fail to make that initial push past the check point you're basically handing a possible win to the other team.
I've seen people face roll opponents and steam roll to victory but that's only because they didn't give my team a chance to take back that first checkpoint. It's literally everything in the opening minutes of the match.