I do that too but instead of html, I store them on discord and obsidian text file (double back up)
but I still keep it on my browser, maybe someday I would like to fetch LLM and describe my interest over time
That is just called your browser history?
The browser history contains a lot of junk and I don't want that saved forever. Curated tab history is a bit different. It's stupid for sure, but also a bit comforting to keep the most important articles and such. For anything I really care about, there's always ArchiveBox.