Tableau imports all different kinds of data, no problem. Tableau displays all kinds of different chart types and data visualizations, also no problem. Tableau is not good at 'exporting' data. That's because the purpose of Tableau isn't to create data, but to display data in a visually understandable way.
PS: You can do some rudimentary copy/paste of dataset out of Tableau and into Excel manually, but I don't suspect this is what you were asking about.
In addition to copy and pasting out of Tableau into Excel you could try Exporting as a Cross-Tab. I've found that to be useful when trying to share table-like "visualizations" with others who just want a list or simple table.
Yes you r right Shawn..
I will not encourage this tool for my client.
Its simply wasting of my time.