This whole thread. 
It's not a sin to go on a pilgrimage to the holy land. 
No one is saying a pilgrimage is a sin in itself. The point is that while the world burns with apostasy, and while Our Lady still waits for the consecration of Russia that Our Lord warned in 1931 would “be done late” like the King of France, the Neo-SSPX parades expensive trips as if Catholic life is tourism. The true Catholic spirit is penance, sacrifice, and combat for the Faith. That is what +Archbishop Lefebvre raised his Society to stand for, and what it has now betrayed by seeking comfort instead of the Cross. Pilgrimages without militancy are empty. This is why the Neo-SSPX is spiritually dead, and why Tradition must continue outside of its compromise.