These issues can be debated without the use of links to videos. As mentioned above, we know that there are tons of videos out there promoting Betta fighting. Most of here at BettaFish are aware of this disturbing issue and find our own ways to try to discourage this sort of thing from happening.
There will always be people out there that do these sorts of things. If you want to help stop Betta fights, you can ask the forum on how to help discourage the fights, then take it up with people who are actually promoting the fights.