"Triggered" by Trump in the same way that so many potential ISIS members would be.
Surely an even more significant trigger would be our pluralistic society, freedom of religion, democratic elections, etc.
Would you similarly argue that this is a valid argument against us continuing these institutions?
After all, if you think we should consider Trump's impact on extremists as an argument against Trump, then you must recognize that this will lead you to argue against freedom of religion, free elections and the like.