Except there is this ugly bootloader which tries to communicate after each change of the DTR line... I think this has been discussed already twice in this thread
Well, the OP JimGurney hasn't mentioned having an issue with this. If it is a problem rather than a "talking point" then either cut the dtr trace, use software that does not twittle the dtr line, short the dtr line to ground, or buy a USB serial adapter and don't use the dtr line. 