... but that is internal and Islam is largely external.
Exactly. As one noted pundit said years ago (it may have been Aleksandr Solzhenitsyn) ... "Is there any reason to mourn the decline of a society that has done so much to advance its own collapse?"
Like i said: decry both.
At least we can do something about the one ... not that we will....
When Christ returns it is gonna be a bad day to be either a pagan modernist or a Muslim.