The x2 damage multiplier is significant to me, the Twilight Cave is just more of a questionable DLC practice that I think normally people would be outraged with if it weren't Nintendo and amiibo. The Cave should have just been a bonus for buying the game, but honestly I probably wouldn't spend much time in there if it was. It's not significant to me in importance, but I think it's significant in that it's a sizable content that's being locked behind a Day One toy figure DLC pass.
That's what I said. It is significant to you and it could be argued that you've even attibuted more significance than even Nintendo and Tantalus when they added it to the game.
Which is the problem in this kind of threads. Since if you didn't considered it significant, you wouldn't have made a thread.
From your posts, you don't seem to be pissed off at amiibo locking content in general, but at amiibo locking content that you like.
Which is why I said it varies. Like the other poster that mentioned 1/3 of Mario Party 10 locked behind amiibo. Which as a number looks significant, 6 boards locked behind amiibo even.
Until you play it and notice that the amiibo mode is just square-shaped boards that you go around collecting coins and stars. Like the rest of the game but more simple, no car and individually. Plays more like a normal board game. And it plays slower even because of tapping amiibo at each turn. I even remember some actually saying that "the classic Mario Party is locked behing amiibo". While afteer release many found that it's a lesser and worse version of the game.
Which goes back to what I said about attributing more significance than what it is.
Is okay to voice concern, frustration and disappointment. And is okay that you find the damage multiplier that the Gannondorf amiibo adds as a significant addition to you, but remember that others will see it at just "so it makes enemies do 2x damage...wow...what a deal".