Barbgaunts love

I've been watching videos of multiple content creator for Tyranids and a few tier lists, and one thing that strikes me as odd is the lack of love for barbgaunts. They are always somewhere near the bottom of everyone of those lists yet I can't help but think everyone is wrong?

For a measly 55 points, we get 10W on 4+, 5d6 shots with blast at strength 5, and those shots apply a 2" reduction to move, advance roll and charge. How is that not considered amazing value?