I actually like to watch "Threshold". If I think of it as a nightmare Janeway had after eating too much of Neelix's food and that it actually never happened, then I can enjoy the funny parts of it. And there are a lot of funny parts in "Threshold".
Yes, there were episodes which were much worse. Episodes like "Fury", "The Gift" and "Endgame". At least, I didn't feel insulted by "Threshold"