This episode is truly despicable. It has extreme ethical issues with how Daphne treats Velma, which is flat out psychological abuse, unlike the Scooby Snacks episode where it was very flat out simple, and that's basically why JCB only did that episode to show the unethical side of using Scooby Snacks. Personally, I see nothing wrong with that. Scooby and Shaggy are both willing to do it anyway, Scooby Snacks are an incentive/reward. You could over analyse it, but I don't think there is anything wrong with it. I don't think there's an abuse in "bribing friends" with Scooby Snacks. It was nice to go back there and it's unfortunate JCB never did it again, although it's also highly unnecessary, which SDMI and the then concurrent DTVs pointed out anyway.
But I do think what Daphne did to Velma was downright abuse and the way she did it. Even if Daphne had just begged, it would have been wrong to do so. But the way Daphne did it is just wrong and hypocritical and proved that the person who wrote this episode had not been paying attention and WB cared neither. It proves this episode, when you boil down to it, is just a job you're paid to do. The voice actors and animators had to just do what they had to, whether they liked it or not, if they did show anything against, they'd just be fired, and some people can't risk that. I mean, I don't know what Grey, or any of the other cast thought about doing this episode, but they still did it regardless, probably because they're obviously contracted to do it. But it's just a waste of people's talents.
Even if you liked this episode, it still has unethical issues that were ignored for the sake of a cruelly and poorly thought out joke, which was for the sake of pay and control over a series that was being thrown down the toilet at this point, anyway.