I guess those last two are actually being used for something. But it kind of bothered me you know. Like if someone bought all the land in your city and then just left it empty. (Actually that sounds kind of nice... Bad example :)
You can register any free domain, it is better than having the project at Netlify, Vercel, ChatGPT, lovable, or any other domain - those domains are vendor-locks.
If someone doesnt care enough to invest $3.00 in their project I'm not going to use it.
On more than one occasion a friend has sent me a netlify link asking for my opinion on a business or product and Ive replied that its a throwaway project.
When I realized like half of my bookmarks don't resolve I realized web is ephemeral. just look it up, if it doesn't come up then it's gone.