But by your philosophy, I'd have killed the boss way before you'd kill it using chain hooks. If a boss requires one person to constantly chain (assuming you'd have 4 people), you wouldn't be able to maximize damage done. With 4 people on one boss, its a simple matter of keeping the boss stunned continuously and that's not a problem with smashes, etc, and sometimes you wouldn't even need to throw a single spear. But then again that'd be assuming everyone was good at the game.
I'm not saying it doesn't has it uses though, its merely a matter of opinion.
Raid bosses let 6 players through.
And a raid boss running around with 6 players trying to hit it?
Or
A raid boss that cannot move or attack with 4 players trying to hit it.
Most normal bosses of course go down with 1 hook, so thats nice too.
Yes, hooks are a party weapon. I dare not bring hooks when I solo or duo. Waste of effort and money.