Flagging the videos doesn't do much to stop them being posted. In the eyes of YouTube, there is nothing wrong with them. And truthfully, unless an animal is shown to be harmed, there isn't much they can do. It is the owner's right to feed the frogs what they want in the end. I don't flag videos because I am a staunch believer in the right to express yourself. We all have differing opinions as to what is proper regarding foods, substrate & handling.........we will not all agree on all points.
What I do know is that some of the videos disturb me and since I have the right not to watch, I exercise my rights. I have way too much to do in a day to waste time fussing at folks about the videos they post. Now if I come across kiddie porn or an actual crime, then I will report it. Otherwise I avoid it if I can.