It's not a fact, it's a sample picked out of a larger group. Overall it was a mixed bag.
Here's a group that of positive additions.
Gudas, Bellemare, Gagner, Del Zotto, White, Neuvirth, Elliott, Folin, and JVR.
(I refuse to put Weal on this list, although others probably would have)
And Vandevelde was signed by Holmgren and then brought up by Hextall in 2014-2015, where he was actually semi-decent in the second half. He scored 9 goals that year, and while that was known to be unsustainable, it was enough for people to think it was worth seeing if he could be a useful 4th liner. People were fine with him being re-signed too ($700k per year, two way contract, for two years), which showed it wasn't as black and white as you're suggesting. Unfortunately that thread is now gone... but I posted it before as proof.
Here's another thread where you can see similar sentiments in posts from January 2015 and a little after.
Chris VandeVelde
VDV only became a huge problem
after that contract was signed, when Hakstol decided he was a top shutdown player who should be used against opponents top players and to finish every damn game. THAT was where the problem came from, Hextalls horrible failure with the coaching staff. It's just like with Bellemare. Started off as a fine addition, then everyone hated him once Hakstol did dumb stuff with him, and now that he's gone we have further proof that the coaching/usage was the real problem with that 4th line.