Now I read this, and the article, and now I am confused, because I was a staunch believer it was gyroscopic effect fault, now the thing can work without a gyros

Now I read this, and the article, and now I am confused, because I was a staunch believer it was gyroscopic effect fault, now the thing can work without a gyroscope and what the hell? Now /I/ want to know why the bike do not fall.