Interesting 🤔 which requirements don't they fit?

Reactive templating and preserving DOM nodes (outside loops). I literally mentioned lit-html and React (Preact has the same issue AFAIK) in the 3rd post.

you did. seems strange though since lit doesn't nuke the dom when props change. it updates attributes, text nodes, etc individually

Yes, same for (p)react, Vue etc. The difference is it's on nodes *they* created, not nodes that were already there. So if anything else depends on nodes that were already there, you run into timing issues.