Copilot in Power BI creates interactive reports by generating visuals, insights, and DAX measures on the fly using AI capabilities. However, paginated reports tend to be more static than interactive reports and require exact controls for the layout and pagination of data.
Indeed, Power BI Copilot is not thoroughly integrated with paginated reports the same way it is with interactive reports. The app hasn't developed functionality to automate complex elements needed for a paginated report, like tables, matrix visuals, or custom page-spanning layouts.
All Copilot will do for you is that it might provide some value for paginated report creation, though not really. It does so much else, including but not limited to:
Creating DAX measures for queries in paginated reports.
Provides visualizations and insights for adapted insertion to paginated layouts.
Helps to develop data models and queries for both interactive and paginated reports faster.
How to use Copilot for paginated reports:
Use Copilot to assist in data exploration and measure development, which can later be applied to the paginated report.
Do the manual design of paginated reports on Power BI Desktop by using the models and measures produced by Copilot.
Thus, profile Power BI Copilot will definitely work for creating interactive reports, which it will not be able to do for paginated reports. It leaves those aspects where you do data work but not layout and pagination design.