I volunteered with them for a while about ten years ago. Still remember the Iraqui guy thanking us with tears in his eyes because he got to see his daughter for the first time on a webcam setup we did for him. They’re good folks, I’m glad they’re still around.
Even if it isn’t changing IP, you still want it in your DHCP table so that IP doesn’t accidentally get assigned to something else. It’s unlikely on a small network but it can happen.