You can get your site online just as quick without Buttflare. If anything, adding a reverse proxy is additional work you would otherwise not have to do.

That's not really the same thing though, is it? You have to specifically opt into hosting your website on Cloudflare instead of any alternative, while knowing that it's one of the options more against your ideals. It takes the same effort to host a website on Cloudflare as it takes to go with any of the alternatives, like Netlify, Github Pages and Codeberg Pages (even better!). And all those options are free, too!