Automation conditions only allow you to select what is there, but they should allow you to exclude as well. There are a million use cases for this.
For instance, if certain people are assigned to a task, then other automations do not need to kick off. Condition: Assignee "Is Not" [Name].
Or, if I create a task today that's due later this week, I may not need certain automations to kick off. Condition: Due Date "Is Not" [This Week].