It’s definitely doable to use Obsidian to publish, tho as with any kind of web publishing there are annoying compromises. The official Obsidian Publish is (reportedly) easy, but not cheap (and if JavaScript fails to load for a visitor due to spotty signal or whatever, it will display no text). There are static site generators, which unfortunately are mostly designed for computer people and so tend to be technical to set up. (It bothers me so much that there still isn’t a really easy way for people to publish online with text files that they can easily move and backup.) A sort of middle ground (tho can still befuddle to customize) is Blot, which publishes a Dropbox folder of files as a website. (I started using it for approved but decided to just use a text editor instead of Obsidian with it; I don’t recall why.)
I’m not sure how up to date this list of options is: https://forum.obsidian.md/t/obsidian-publish-alternatives/. If you use it and a lot seems outdated, let me know and I’ll try to get it fixed up.