fediverse.express is a very cool project. It’s basically a client for multiple cloud VPS services (DigitalOcean, Linode, etc) that runs scripts to set up a fediverse instance on whichever one you choose. The advantage of this approach is that you can pick your hosting provider, and you get shell access. The disadvantage is that you’re a customer of the VPS provider rather than of fediverse.express.
From a technical standpoint the problem of mass fediverse hosting is very difficult. Each approach has advantages and disadvantages. I’m excited to see more people experimenting with it, especially with a different approach.