The problem with bass and neighbours is that the lower frequencies have much longer wavelengths. The lower you go the more chance that sound is going to reach beyond your apartment. So in and of itself, having a subwoofer or not having a subwoofer isn't necessarily the solution. The base suggested in the article goes down to 35HZ. My subwoofer in my apartment only goes down to 45HZ. The subwoofer would be more beneficial to the neighbours as the soundwaves wouldn't travel as far as the soundbar.
If your apartment walls are adequately built you should never have issues with neighbours.