The addons usually allow you to challenge if you want to. People just can’t do it to you. I got really fed up with every rogue you ran into while levelling trying to challenge you to a duel and got the addon. I haven’t used it in years.
It’s your choice
The links and stuff is not an MVP thing, it’s a trust level thing. We can all get to trust level 3 as explained in this FAQ:-
The only thing that is different with MVPs is our font colour.
