Unfortunately, yes. I specifically asked about this, and they do not offer any option which will work with the bolster extension. Which...unfortunately...means that I'm also losing one of my makeshift cup-holders. I have no idea if/how any covers could be made to work with that seat function. You might be able to just have covers made to fit the extension when pulled out, but that would also mean the covers would be loose when the extension was pushed back in. The rest of the seat functions work normally (tilt, slide, headrest tilt, etc).
Now all I need to do is figure out a nice OEM looking way to fit more than 1 cup. I have a Ford Tempo single-din tray I want to install, when I get some time.