Illustrator uses a font engine that is not capable of doing single line fonts. All fonts in illustrator are outlines no matter what. If we take CNC Vector as an example its simply a outline that turns up on itself, so it is not truly a singe line font as far as illustrator or your cad is concerned. So beware if you use a cnc machine/ laser cutter the area will be machined 2 times.
As such the fonts you get out of illustrator will always be outlined. But if you preprocess the fonts and eliminate the inner loops then you can export them. Also if you do not use illustrators font engine then its also possible. But in both these cases they cease to be fonts as such.
Same applies to your dots cad software have usually no feeling of line thickness in default views so a infinitely small point is invisible but the vertices are still there. How the cutter reacts to this is another thing.
I would say its not agood idea to use illustrator for the job at all.