It is difficult to say how many tabs the average Linux user has open because it can vary greatly depending on the individual and their specific needs. Some Linux users may have a lot of tabs open, while others may only have a few. Additionally, the number of tabs a user has open can change over time depending on the tasks they are working on. It is generally best to only have as many tabs open as you need for your current work, as having too many tabs open can make it difficult to keep track of them and can slow down your computer.