In reply to Mark.

With WordPress 6.4, I now feel that block themes are production-ready.

I've been reading the documentation on WordPress.org, and the process of customizing a block theme is now much more clear.

I'm also reading about building a custom block theme, which could use presets to create a theme framework. Basically, theme.json incorporates elements of object-oriented programming.

WordPress blocks are quickly becoming a highly useful and intuitive way to build websites. They're akin to the pattern/style libraries that web designers use CSS to create.