In tools like Miro and Excalidraw, you can copy selected elements from the whiteboard directly to the clipboard as images (for example PNG or SVG), also with a transparent background. This makes the workflow much easier when creating material for multiple platforms where you want to reuse visuals created in Lucid.
In comparison, exporting to an image file, opening that file, copying its contents, and then pasting it into the target platform is not a lean workflow. It is slower, breaks momentum, and results in a large number of unnecessary files that are only needed temporarily for the copy-paste operation.