It's less invasive, but still crazier than it sounds.

Indian railways changed the base sleeper cars into free-for-alls by changing sleeper cabin classifications and stopping verifying tickets. Now you have people buying the cheapest tickets (unreserved general) and swarming the "reserved" sleeper cabin berths. [0] They're just over-cramming the trains.

[0] https://www.tripsavvy.com/indian-railways-trains-travel-clas...