> Here. This doesn't make sense. Why are people, or do people feel the need to link their identity to their thoughts online.

Some people cannot conceive of handling the thoughts of another without an identity attached to them. Thus, the need for all thoughts to have identity attached. It is believed that linking a certain identity to certain thoughts lends them weight and credibility, and linking a different identity to the same thoughts saps them of any credibility.

In either case, some people choose not to deal with ideas as separate from identity.