#2 The fans still talk about him no matter how much WWE hides
It’s funny that we talk most about the thing we aren’t supposed to mention. It’s just like getting thrills when you do illegal things even when you realise that it is so. But this comparison is way off the chart when it comes to the situation of Chris Benoit.
A murder-suicide case is not something WWE can keep under the rug forever. No matter how the promotion ignores it, the fans will continue to talk about it.
So knowing that something exists and completely ignoring this very existence like what WWE is doing makes little sense. They might not want their image to get ruined by mentioning Benoit, but their fans, that are the most integral part of the business surviving, decide to travel the opposite road.