[piva00]

You can do exactly that with a Wordpress Docker container: install and run the container, it might even spin up a database for you if part of a docker-compose or you just rely on SQLite. The technical geeky aspect comes into making your blog available to the wider web through naming, you need to configure DNS, and serve requests.

I don't see how an Android app that you can "click and install" would help to configure your DNS entries.

[eternityforest]

I think in a few years at least some self hosting will have moved to things like cloudflare tunnels and ngrok, and domains and certificates will be a "Only if I'm getting paid to deal with it" kind of thing.

Maybe to reduce latency there will be hosting services that have the tunnel proxy in the same data center as your VPS, and include the service and the subdomain with your account.