Ya, you're right!! Mine definitely isn't normal looking compared to yours and the pics
@kittenbritches shared. I think mine has died. I just touched it and you are also correct the top is cottony. I pulled it out and all the tissue fell off. I'm so bummed. My purple plume/brush gorg seems to be doing fine but it's in an area with better flow so that could be what killed my poor Corky. I'm trying to find a better spot for my powerhead. There's not a heck of a lot of room in my 5g. They need to make teeny tiny powerhead.

Mine is small but not small enough for my space so I'm limited in placement. It's a coral box QPS5+. I might have to try the Hygger mini or Koralia Hydor 240 and hope they're smaller so I have more options for placement.
Should the Corky's have gentle back and forth movement or is constant stream fine? I currently have constant stream going.