I have a website [1] on GitHub Pages. It's extremely easy to move out of GitHub, since it is on a ___domain I control, which is not the case with e.g. social profiles. That fact that the site is static makes it really easy to host it basically anywhere where a web server exists.

The site is deployed using a GitHub Actions workflow, which happens to be the only GitHub-specific feature, but a similar script could easily be written in the future for another hosting if necessary.

[1] https://group.miletic.net/