I think it's half just a buzzword virtue signalers use to dismiss some very valid concerns people have about Islamic religious fanaticism. I mostly agree that Islamic fundamentalism is incompatible with Western culture. Which isn't to say people from Muslim backgrounds can't assimilate or are capable be of being decent people.

On the other hand, there is a lot of uninformed Islamic resentment that borders on xenophobia. This idea that if we let in Syrian refugees the US will become a Sharia Law abiding caliphate is stupid and navitist.