The issue with those alternatives is that they cost a lot. In your case, this additional cost was worth it in an emergency but that's often not the case.
Think of the vast number of people who send money abroad to support their families.
Even if I could have found someone in a small Moroccan town that knew what a Bitcoin was and how to use it, the daft exchange rate they'd have offered me to convert it into cash would have easily exceeded the cost of Western Union for the same transaction. The villages people send money to support families are not full of hackers playing around with blockchains, and the few people in their country with the knowhow and resources to exchange Bitcoins for cash are not going to be cheaper or easier to deal with than WU.
Sure, I can cash out crypto via my bank account and bankcard pretty easily, but I can cash out cash even more easily...