So this would save one keystroke ??

No, four to six.
1st for file the filename dialog
2nd and 3rd, if you save a text-file to a different ending than txt)
4th for confirming the overwriting of the file (if you dont overwrite by default)
5th and 6th (or one mouse click) for the options dialog since the focus of this dialog is set to the line termination dropdown by default.

Your original request seemed to be to bypass the options dialog. I guess you would like to bypass the filename dialog too.

Exactly. :D I want to export with no questions (twice) asked.

-1 keystroke since the focus of the dialog is now set on the export button

We are now (in 1.11.6) down to 3 key strokes for repetition of the configurable text exporter:

ctrl-e  (to initiate repeat export)
return  (to confirm since we are writing to a file name that was not visible, so we need to avoid accidentally overwriting the wrong file)
return  (to accept the options of the configurable exporter that are set as in the last export.)

so now you are savin 2 to 4 keystrokes.

This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report.