In recent years a new phenomenon has emerged: spiritual tourism. There is nothing wrong with it per se but the problem is that many Imams have turned into traveling salesmen compromising their Islamic principles by not offending tyrannical rulers.
Graeme Wood has made a name for himself as being some kind of a specialist on the takfiri terrorists but his attempt to paint everyone with the same brush is too sweeping a generalization.
Sectarianism is destructive whether indulged in by Sunnis or Shias. It is important for Muslims to be on guard not to fall into this trap since it only benefits the enemies of Islam. In the month of Muharram, some Shia preachers have a tendency to resort to the worst aspects of sectarianism. Such acts do not advance the cause of Islam.2