Anonymity is partly a response to security concerns. During the Black Lives Matter protests, millions of young people downloaded the encrypted messaging app Signal to avoid surveillance. The anonymous hacker group Anonymous made a buzzy return. Other activists used tools for blurring protesters' faces in Instagram stories and moved to decentralised apps.
Anonymity can also be ideological. In crypto culture, known as Web3 culture, the idea was founded that transactions can be made online without exchanging personal information. It had a newer norm of showing a cartoon instead of a human face.