The assistant upload uses a list of supported file extensions to filter which files are displayed in the file manager. However, the list is missing many supported text file types like .py, .rs, .yaml, etc. It appears to be programming-centric file types that are not included.
If the user manually selects "all file types", such files can still be selected. However, it's not immediately obvious why they don't show up.
I expected any kind of text sourcecode file to be displayed as uploadable.
