As long as they keep popping out at least decent songs, no.
Besides, there are quite a good amount of people who love them. This is shown by the fact that the vids of these songs that I've posted on YouTube get views every single day and get commented on nearly everyday.
In fact, here's a quick look at the Top 5 Most Viewed for my YouTube Account:
5: Flip, Flap and Fly: 15,114 Views, 8 months old, average per day: about 63
4: The Mad Song: 15,215 Views, 7 months old, average per day: about 73
3: Friends For Dinner: 16,075 Views, 6 months old, average per day: about 106
2: Eggs: 16,869 Views, 5 months old, average per day: about 113
1: Legend of the Lone Dinosaur: 19,719 Views, 7 months old, average per day: about 94
Wow! Didn't expect those, huh?

If you're wondering, here's how the LBT 13 songs are currently doing:
Say So: 1822 Views, 1 month old, average per day: about 61
Yellow Belly Bounce: 3087 Views, 1 month old, average per day: about 103
How do you Know?: 2210 Views, 1 month old, average per day: about 74
Wow! Doing good, huh?

And to think, my favs aren't among the top 5. -_-