Earlier quoted context omitted.
I keep hearing this and it does not comfort me much. Remember how the West had a problem with... The Taliban... then Al-Qaeda...... then ISIS.......... then ?? The names are changing but something else remains constant or is getting worse.
One constant factor is strife in the region. Provides a constant source of enraged youngsters seeking revenge after being hard done by an outsider (death in family, unemployment, living under an authoritarian govt, illiteracy, etc). This will continue until weapons need to be sold. Military Industrial complex is a thing and it needs blood to lubricate its wheels.
Syrians (and Saudis) who joined the insurgency in Iraq weren't disenfranchised infact they were from the elite, often dropping out of university to go and join the "cause". Osama Bin Laden who founded AQ was born into one of the richest families in the world, had higher education and really had no hard done to him by anyone.
Europeans who join ISIS are mostly 2nd and 3rd generation "immigrants", often to mixed families and "fresh converts", they aren't particularly disenfranchised either.
Geopolitics and economics do have a role in conflicts everywhere, but the sooner you stop blaming everything on people being poor, oppressed and "western expansionism" the sooner we might actually be able to start working on a solution.
Last time I've checked Tibet is effectively poorer than Lebanon, Syria, Iraq, Iran, and Saudi Arabia, not to mention the smaller gulf states (and I'm not counting the average which is skewed because of how the wealth is distributed) and it's quite objectively oppressed but I have yet to see Tibetans blowing up restaurants in China.