Context: LaTeX is a typesetting system. When compiling a document, a lot of really in-depth debugging information is printed, which can be borderline incomprehensible to anyone but LaTeX experts. It can also be a visual hindrance when looking for important information like errors.
The last point: I use MuPDF + entr as zarhura crush as a mf, not usable at all. Some others use typst-preview which can be used in the browser and as a VS Code extension. But I use Neovim btw and the web version lack a few key features. Anyway, I use mupdf+entr+nvim for many months now and it's more than enough for me.
The web version, for me, is just to share my local project with someone, that's it.