In my experience, HTML+CSS is better in every way except page breaks. If they added more pagination-related features, it'd be better in every way. It's been too long since I played with it, but I remember tons of weird issues, like images being at the bottom of one page and the caption being on the top of the next, etc.

Additionally, CSS really needs way to say "when text overflows from this container, put it in this other container". With that, it could replace Indesign for me.

That said the rate of improvement with CSS is really great. :has() alone is super powerful. I also love color-contrast().