Rod Dreher was hearing stuff about it for years (this is true of other journalists as well) and couldn't get anyone to do more than tell awful stories on a "don't use my name" basis: and of course a journalist can't run with pages of anonymous allegations.
This was often young men whom McCarrick had sexually exploited, who wouldn't talk.
And McCarrick had enough decades in the upper hierarchy to promote, protect, and network with many other sick, conscienceless perverts like himself. And they're still there.
Yes, it is reminiscent of our “gay governor” McGreevey, who got married to hide it. When he finally came out, it surprised nobody - except apparently his wife.
It makes all of McCarrick’s actions - and appointments - suspect; at least we know why Dems reliably carry the “Catholic” states...