I have multiple tables I want to display on the dashboard, but tableau forces me to link them. Is it possible to add the tables without linking them?
Yes, from a standard Tableau sheet,if you click the Data menu and "New Data Source", you can add another unrelated data source to any already open. later on this can be blended to existing tables but you don't have to blend it and it can stay independent from them.
You are only obliged to join tables when you add them at the same time in the new data source screen as the point of that screen is to allow you to define joins between multiple data sources.