Will these fans burn out?

rated 5v giving 12v. may take a while to burn out but at least in this vid they didn't. sounded like it wanted to.

[@MarkNF82]

Here is the "heater" version of the blue fan.
th-cam.com/video/vivbspvywKo/w-d-xo.html

[@christronicsdereksrandomness36]

Wow thats funny. I had no idea they used the same housing for a heater version.