Well, both the article and the video say that there is more than one factor for reaching stability, not only momentum. I think that this is the current status,

Well, both the article and the video say that there is more than one factor for reaching stability, not only momentum. I think that this is the current status, knowing that the bike does not fall by the simultaneous combination of several factors. When analyzing the problem mathematically, it can be found that there are additional stability factors that do not even have direct physical meaning.