If a joke ICE notice with a Rick Roll link on the page source gets put on kodi.tv website on April 1 then it's clearly a prank by Team Kodi. They do something every year but this is the first time they have broken the support forum, download links, add-on repos etc. I don't know why you are confused (or pretending to be confused) by this.It's a joke, which is fine, but pulling everything offline isn't necessary.
I get that. And I give up.
For myself I'll wait and see.