DoughyIt's a hard thing to really talk or think about, especially if you don't experience it yourself, but it is because it's hard to break relationships instantly. It usually has to be something very catastrophic that directly affects the other party to instantly break it up. If person A grooms person B online, but the friends of person A never see this side of them, even after they're exposed, then it can be hard to accept that your friend does that stuff. People tend to need some time to process things like this.
People who are on the sidelines don't always deserve grief, they either are new victims, unaware of who they are talking to, are still processing emotions and are unsure of what to do, or they encourage the behaviour and are similar themselves (in which case it makes sense to hang around similar kinds).
this is why we're still chill with you after what you did to aph :')