Good points. It depends on the player I suppose. The likelyhood of your opponent kicking and leaving you hooked by accident is slim. More than likely they'll either get a hit and leave a shot or leave another safety option, or they'll foul. And all of these outcomes are better than going for a low percentage runout where losing is the most likely outcome.
Sometimes we have to drop our ego and play more strategically, rather than play ballz out every time simply because you have a starter shot.
I think a good video that would help weaker players would be to take this exact situation and show how effective the safety play would be against a good player, one that can kick well and won't give up a ball in hand.
The hardest part about choosing not to go for the runout is actually admitting that you don't think you can get out from here. That's something a player has to realize and accept based on his or her own experience. Without an honest assessment of skill level and current limitations, a lot of players will lose this game based on what they do with that 6 ball. This is usually where a weaker player will go for the runout, because it looks obvious with that easy starter shot. But what'll happen most of the time is they'll miss the 7 or not get a good a shot on the 8. And they'll leave their opponent the last 2 or 3 balls.