User blog comment:KillRoy231/Love & Pet/@comment-27111026-20150120071042/@comment-26973802-20150120190741

One thing that's overlooked about the wizards is that they fall into a crevice after they are frozen. They could still be alive, but they could just as easily have been shattered to pieces from that fall, just like that bird that gets frozen by the snake at the beginning of Season 3. So I guess whether they were killed from the fall or survived the fall and remain frozen forever (like Valtor was for 17 years), is up for each viewer to decide for ourselves.

Also the only fairy pets I would consider "dead" in Season 5 are the Winx's fairy pets who you'd atleast think would be with them, but I suppose since they explicitly had the pixies stay behind during their battles with the fairy hunters, maybe the fairy pets are staying wherever the pixies are for Season 5. (Though again, what does and doesn't happen in Season 5 is outside of the RAI continuity, and it makes sense that the Winx would hand Love & Pet over to other people who are good at the services they do for when they return to Alfea, so I guess that would answer my question.)