It's still revolutionary to sit down with people you don't know and share a delicious meal. Sitting on the floor is something we don't do all that often in the West, so IMO, that also opens one's eyes to a different perspective. Langar was and still is revolutionary!
> still revolutionary to sit down with people you don't know and share a delicious meal
The revolutionary part isn't sitting with strangers. It's sitting with strangers across classes. The equivalent to a langar in the West would be everyone in a community dining at the soup kitchen.