Friends don't let friends export to CSV -- in the data science field.

But outside the data science field, my experience working on software programming these years is that it won't matter how beautiful your backoffice dashboards and web apps are, many non-technical business users will demand at some point CSV import and/or export capabilities, because it is easier for them to just dump all the data on a system into Excel/Sheets to make reports, or to bulk edit the data via export-excel-import rather than dealing with the navigation model and maybe tens of browser tabs in your app.