So I Recently Picked up WAR

[Alleluia]

you keep going and meet in the middle then AoE.
If they're smart, they'll bring them to you.

Not for bosses though. There is no legit scenario in a pug where anyone should be just running ahead of the tank and pulling the bosses before they’re in the arena. Maybe in a static, but even in those you at least wait till everyone’s physically present before engaging. It’s just practical.

More subjectively, I think the tank should always pull bosses. They’re the ones who need to be ready for a fight to start bc they have to be ready to generate aggro. So they should be the ones who control when the fight starts. If the tank isn’t ready, it’s bad for the whole group.