One explanation would be todays very popular outlook on what the bible says:
"If we can twist the scripture into an easier way, we will do it." Or
"If we change it, they will come"
Not needing to repent, changes everything, and a new gospel that includes repenting of sin is not necessary, will not only bring hoards of people into one's church to fill those plates, the fact that we no longer must repent, is the only way some will bother getting saved, as they never were interested in Gods true way.
Satan is ecstatic with the new gospel, and dearly loves those who teach it. Satan loves them so much, he has set things up to where he will be with those false teachers forever.