The encryption is both super-fast and well-tested, stream ciphers are more suitable in the era of internet voice and video calls, where you don't always know th

The encryption is both super-fast and well-tested, stream ciphers are more suitable in the era of internet voice and video calls, where you don't always know the length of the data to be encrypted, and using block ciphers will cause a (I know, negligible but...) latency because you have to wait for X bytes to fill a block.