Yeah, the team is the siphon, but no one that we understand has managed to siphon the ability out of a being without killing them? Tarshak to V, Armadyl to whoever on his world, Zamorak into Zaros (Destroyed his kind and shipped him back to subdue ), Sliske to Guthix, then Sliske stabs himself to siphon himself to RS gold the Runescape player. Besides, that's what the staff was for, it was a siphon. The sword allows the user to travel between measurements that Guthix uses to travel to places. In addition, he used pieces of the sword to depart portals according to the wiki. In the end, it is said that the sword's real objective is dividing things cleanly, instead of the siphon which is used to fuse objects.
I'd like to preface my comment with this -- I would be completely fine if they eliminated the duel arena, and I might also be leaning towards removal. While nothing you said was totally untrue, I do not think everything you said is super precise and that I believe there could be much better solutions than just removing the content.
I used to adore dueling. It had been enjoyable, even if I wasn't betting any money. I'll admit that my curiosity about dueling has severely waned over the years (I only play my HCIM so I don't duel anymore), and now you could basically duel anyone anyplace, doing the free fights has lost its charm. But dueling was fun for me, and considering the whole purpose of Runescape game was to have pleasure, I would consider that a factor.
The fact, however, is that this isn't a game. Yes, kids can play with it, but they are not the major audience. Even back in 2008, less than 4% of those Runescape players were below 13. Even if this percentage had been an underestimate (which I frankly think it was considering how many children lie and say they're 13), that amount has only gone down as Runescape game has aged. Bear in mind, RS is nearly 20 years old today -- it is permitted to https://www.winrsgold.com/ drink in much of the world.