Any group discussion could be "random users" to an outsider. To people at W3C, or even to people who just follow web standards development, the names are pretty

Any group discussion could be "random users" to an outsider. To people at W3C, or even to people who just follow web standards development, the names are pretty instantly recognizable, and presumably since these accounts have been added to the W3C's GitHub org, W3C feels confident that they are who they claim to be.