It’s a racist dog whistle because you are indicting the entirety of a religion based on the actions of a single person and their view of that religion. It is bigoted and ignorant, which is not the solution to this problem of religious radicalization.
Of course it’s not a one off instance. It’s the 2nd biggest religion in the world. There’s a lot of people who identify as Muslim. Just because some of them fall to extremism and commit atrocities does not damn the entire faith. If that’s the case then declare your faith or lack of it and I will fill an unlimited count of its crimes.
There’s a difference between a religion having an extremism problem, such as Islam and a religion being inherently extremist. You ever consider why Islam has an extremism problem now in modern day and not say, the Islamic golden age?
Bigoted and ignorant. As much as the extremists you hate. Your just not violent. Yet.