If you create a desktop shortcut with the command C:\Windows\System32\cmd.exe /S /C "start /B "darktable CMD" "C:\Program Files\darktable\bin\darktable.exe" > "%USERPROFILE%\Documents\Darktable\log.txt" 2>&1" and use that to launch darktable you shouldn’t have popping windows anymore.
Works like a charm and DT pops right up but there is a terminal window left open when you do this at least on my end and some people might find that just as annoying to have the window and the taskbar icon around and if you close it then you exit DT…
EDIT:I tried to add it a couple of ways but it didn’t seem to work … I just added ampersand and a space and exit and I tried with quotes which may be wrong…