Someone else would have come up with it, and it's not that difficult to create Clans at the beginning...

WoW, I think the idea to create Clans, etc., came about earlier.

I disagree about the Clans... this isn't politics...

1. "It's not that difficult to create Clans at the beginning..." - that's why people are telling you to familiarize yourself with the history.
2. Answering this question - imagine, the site has just been created, and the idea arises to create Clans. People can be forgiven for not knowing what WoW is and how Clans were created there. Where to start? How to do it better? So that when you and I come, we don't turn around and leave, but instead are amazed (exaggerating) and impressed (or just remain satisfied). Do you think it's easy to do? It takes so much time that you could, by using it wisely instead of on such "nonsense," earn enough to buy a personal yacht. It requires knowledge. It requires money (for the internet). And, finally, it requires overcoming the passivity of others, which is the most difficult thing, to convince them of the need to create Clans.
Try creating your own website, and after some time, when and if there are enough people on it, unite them into Clans. Or, if that's too difficult, try creating a political party from scratch. Let me know the result :D :D.
3. Well, politics, as you know, is the art of managing people. Clans are created for this purpose (I'm not claiming that this is the main goal of creating them, or even if there was such a goal?), or they engage in this. The analogy, as you understood from point 2, is with political parties.