[gcells]

Well Netlify does give you an option to add custom headers, redirects etc. Add CDN and cache busting along with branch deploys, that's something you cannot do with gitlab pages or github pages. Also github pages takes a long time to get live for the first time (at least it did for me).

[neon_me]

Afaik you can specify custom headers in Cloudflare - same as CDN/Cache support and you can definitely use custom branches for release and dev in gitlab - all you have to do is specify them in config.yaml ...

I have been running a bunch of generated static pages via GH (and now GitLab) and never seen any disadvantage, but don't take me wrong - I am always learning :)