[gambiting]

>>But you can do that to a random guy on AirBnB? A hotel? To a delivery service (Uber/Wolt/whatever)?

The "legal" line is usually around fraud - trying to obtain some financial gain by providing false information. There is nothing to gain by giving a fake ID to discord - but it probably violates some rules around unathorized access to computer systems.

[bagels]

It's definitely fraud, the consideration is access to their service.

[heavyset_go]

It's still fraud