In 2022 how often do you actually write text by hand in your HTML files? I find that beside the few buttons here and there (and that's if you don't have i18n), text is always going to be served by a server.
In 2022 we also all use text editors or IDEs that can collapse entire blocks of tags, to improve readability.
I'm not sure I can see a clear benefit here outside of very few edge cases, and I am sure it comes with its lot of disadvantages.