I think they've quit on their goaltending to be honest.
I posted this yesterday too - but it's no different than any other relationship - to be healthy requires Oilers of mutual trust, respect, and dedication. If you respect your wife, believe your wife has your back and is putting in 100%, you'll put in 100% for her. If one of those pillars fails, the relationship collapses and the whole thing falls apart - the respect dies, resentment builds, and you stop trying.
It's human psychology - works the same with goaltending and a hockey team - if you respect your goaltender, believe your goaltender is putting in 100%, you'll put in 100% for him. If one of those pillars dies - the relationship dies, and you quit on your goaltender.
If you look at it - when teams quit on their goaltender like this their play evaporates and they become worse. When those same teams get a better goaltender through trade, everything gets better. The defence gets better, the offense gets better, and the goaltending gets better. It's consistent and able to be shown statistically time and time again. I posted several examples of it yesterday.